02 symmetric cryptography.ipynb

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   "source": [
    "## Keys and locks\n",
    "### Introduction to secrets\n",
    "The key to your home most likely opens a [tumbler lock](https://en.wikipedia.org/wiki/Pin_tumbler_lock#Design). Please take a close look at the figure: the grooves on a key are shaped to push the pins inside your lock so that they align precisely to allow the plug to rotate.\n",
    "\n",
    "*A key contains the __information__* required to open a lock. In a tumbler lock key, this information is encoded in the depths of the grooves; the importance of the information content over the physical object it is encoded in is even more evident in a [combination lock](https://en.wikipedia.org/wiki/Combination_lock), where the key is a secret knowledge that only you should know - assuming you changed the combination from the default setting - but can be copied by shoulder-surfing any time you open the lock.\n",
    "\n",
    "The space of all possible keys opening a lock is the possible heights of all pins. An attacker can either try all possible keys (brute force), make a copy of your key (bypass copy protection), or steal your key.\n",
    "\n",
    "**Exercise**: suppose a friend decides to prank you by placing a combination lock on your gym locker. The lock has three decimal dials (0-9), with a combination unknown to you. Assuming it takes you one second to change the current combination and try to open the lock, how long would it take to try every possible combination to get your stuff back? Would you pay your friend a €5 ransom to tell you what the key is, and save you the time? What if the lock had four dials, instead of three?"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Hash-based message authentication codes (HMAC)\n",
    "\n",
    "Shared secret keys can provide a means to verify authenticity of a message. A MAC is short tag $\\mathfrak{m}$ attached to a message $m$. MAC algorithms consist of a tag generation $G$ and a tag verification algorithm $V$; these depend on the specific algorithm, but for example they might look like this:\n",
    "\n",
    "$\\begin{align*}\n",
    "    G(m,k) &= \\mathfrak{m} \\\\\n",
    "    V(\\mathfrak{m},m,k) &= \\texttt{true / false}\n",
    "\\end{align*}$\n",
    "\n",
    "The basic principle behind keyed hash-based message authentication codes ([HMAC](https://en.wikipedia.org/wiki/HMAC); see [FIPS 198-1](https://www.nist.gov/publications/keyed-hash-message-authentication-code-hmac-0)) is that if we concatenate a secret key with our message, then it will be infeasible for an attacker without knowledge of the key to produce a valid tag.\n",
    "\n",
    "**Exercise**: choose a message $m$, a hash function $H$, and a key $k$. Compute $h=H(m)$, and $h_k = H(k||m)$. Suppose you send Bob $m$ and $h_k$. How can Bob verify that the message is intact and authentic? Does Bob know that it was really you, and only you, who sent $m$?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "b'\\x8fH>\\x18\\xfa\\xc6\\xab\\x80\\xe5\\x8f\\xffA\\xae7^r\\x85\\xb4\\x1f\\x86\\xf4rU\\x98\\xbb\\x8d\\xb9<\\xa3\\x8f\\xd2X'\n",
      "b'\\xba\\xf0\\x0eK\\x88\\x06\\x98\"\\xf8\\xba\\xdb\\xdb\\x87\\xee\\x85\\xed<\\xa5\\xac\\xa0\\xbc.=\"\\xa8\\xb40\\xe0\\xc5\\\\xR'\n"
     ]
    }
   ],
   "source": [
    "from cryptography.hazmat.backends import default_backend\n",
    "from cryptography.hazmat.primitives import hashes\n",
    "import os\n",
    "\n",
    "k = os.urandom(32)\n",
    "m = 'What is the airspeed velocity of an unladen swallow?'.encode('utf-8')\n",
    "\n",
    "digest = hashes.Hash(hashes.SHA256(), backend=default_backend())\n",
    "digest.update(m)\n",
    "h = digest.finalize()\n",
    "print(h)\n",
    "digest = hashes.Hash(hashes.SHA256(), backend=default_backend())\n",
    "digest.update(k+m)\n",
    "h_k = digest.finalize()\n",
    "print(h_k)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "In practice, this simple description above is not secure against all attacks, so the standard specifies additional rules for padding of the key, and a second round of hashing, so in fact, assuming $k$ is of the right length for the hash function $H$,\n",
    "\n",
    "$HMAC(m,k) = H\\left\\{ (k \\oplus \\mathtt{outer\\_pad}) || H[(k \\oplus \\mathtt{inner\\_pad}) || m] \\right\\}$\n",
    "\n",
    "**Exercise**: compute the hmac of some message of your choice. Pick a secure hash function and use a random key of the same length of the digest.\n",
    "\n",
    "**Exercise**: verify that the hmac is correct. Refer to the [documentation](https://cryptography.io/en/latest/hazmat/primitives/mac/) for options."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "b'\\xa4I-X\\xd3 X\\x05\\x07y\\x97\\xe1\\xbf\\xca\\xa4\\xfb\\xe1i\\xba\\x1bv}\\xe6\\x82\\xed\\xea\\x85\\x13\\xa6Hg\\x08'\n"
     ]
    }
   ],
   "source": [
    "from cryptography.hazmat.backends import default_backend\n",
    "from cryptography.hazmat.primitives import hashes, hmac\n",
    "import secrets\n",
    "import os\n",
    "\n",
    "with open('/usr/share/dict/words') as f:\n",
    "    words = [word.strip() for word in f]\n",
    "    words = ' '.join(secrets.choice(words) for i in range(50))\n",
    "\n",
    "key = os.urandom(32)\n",
    "h = hmac.HMAC(key, hashes.SHA256(), backend=default_backend())\n",
    "h.update(words.encode('utf-8'))\n",
    "tag = h.finalize()\n",
    "print(tag)\n",
    "\n",
    "# now verify this MAC is correct"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Replay attacks\n",
    "Suppose you want to use a MAC to authenticate the same message repeatedly. For example, you have a sensor reporting one of a small set of values. As soon as a message-MAC pair $(m,\\mathfrak{m})$ has been created, any eavesdropper knows what the value of the corresponding MAC, which will never change. A receiver will not know whether the MAC has been computed recently, or intercepted.\n",
    "\n",
    "\n",
    "\n",
    "'Everything is under control. Situation normal. Had a slight weapons malfunction. But, uh, everything's perfectly all right now. We're fine. We're all fine here, now, thank you. How are you?'\n",
    "\n",
    "**Exercise**: choose a message and initialize a counter. Increment the counter and concatenate its value with the message. Verify that the MAC for each message is different and presumably unpredictable."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Cryptography\n",
    "\n",
    "A cipher is a set of algorithms designed to provide **confidentiality** of a message, a.k.a. plaintext, by replacing it with a ciphertext.\n",
    "\n",
    "Recall from the lectures:\n",
    "\n",
    "> A cryptosystem is a 5-tuple (E,D,M,C,K) where\n",
    "> * E is an encryption algorithm\n",
    "> * D is a decryption algorithm\n",
    "> * M is the set of plaintexts\n",
    "> * C is the set of ciphertexts\n",
    "> * K is the set of keys\n",
    "\n",
    "> [Kerckhoffs’ principle](https://en.wikipedia.org/wiki/Kerckhoffs%27s_principle): do not rely on the secrecy of algorithms; the key should be the only secret that needs protection\n",
    "\n",
    "> The strength of any cryptographic system rests with the key distribution technique"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Symmetric cryptography\n",
    "\n",
    "A symmetric cipher uses the same key to encrypt and decrypt plaintext messages:\n",
    "\n",
    "$\n",
    "\\begin{align*}\n",
    "    E(k,p)=c \\\\\n",
    "    D(k,c)=p\n",
    "\\end{align*}\n",
    "$\n",
    "\n",
    "### Substitution ciphers and frequency attacks\n",
    "You've seen the Caesar and Vigenere ciphers in the lectures. Suppose your message alphabet has $L=26$ letters. All ciphers may be vulnerable to frequency attacks, but we can see this most clearly with simple substitution ciphers.\n",
    "\n",
    "**Exercise**: pick an English text of your choice. For example, you can download a book from [project Gutenberg](https://www.gutenberg.org/) - but do please download whole books only once, saving a local copy so you don't abuse their servers unnecessarily. Display a bar chart or histogram of the counts of individual letters in the text. How does the text you chose compare with [letter frequency](https://en.wikipedia.org/wiki/Letter_frequency) statistics from wikipedia?\n",
    "Now pick a random key, encrypt the text with the Caesar cipher, and repeat the graph."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
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\n",
      "text/plain": [
       "<Figure size 432x288 with 1 Axes>"
      ]
     },
     "metadata": {
      "needs_background": "light"
     },
     "output_type": "display_data"
    },
    {
     "data": {
      "image/png": "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\n",
      "text/plain": [
       "<Figure size 432x288 with 1 Axes>"
      ]
     },
     "metadata": {
      "needs_background": "light"
     },
     "output_type": "display_data"
    }
   ],
   "source": [
    "# https://www.gutenberg.org/files/1342/1342-0.txt\n",
    "import string\n",
    "import secrets\n",
    "import os\n",
    "from numpy import histogram\n",
    "%matplotlib inline\n",
    "import matplotlib.pyplot as pplt\n",
    "from collections import Counter\n",
    "from numpy import array\n",
    "\n",
    "alphabet = string.ascii_letters\n",
    "num_letters = int(len(alphabet)/2)\n",
    "\n",
    "with open('1342-0.txt','r') as f:\n",
    "    text = f.read()\n",
    "\n",
    "counts = Counter(text)\n",
    "letter_counts = []\n",
    "for letter in alphabet:\n",
    "    letter_counts.append(counts[letter])\n",
    "\n",
    "pplt.bar(range(len(alphabet)), letter_counts, tick_label=list(alphabet))\n",
    "\n",
    "pplt.show()\n",
    "\n",
    "key = secrets.randbelow(num_letters)\n",
    "lower_case = alphabet[0:num_letters]\n",
    "upper_case = alphabet[num_letters:2*num_letters]\n",
    "\n",
    "substitution = dict()\n",
    "\n",
    "for letter in range(num_letters):\n",
    "    new_letter = (letter+key)%num_letters\n",
    "    substitution[lower_case[letter]] = lower_case[new_letter]\n",
    "    substitution[upper_case[letter]] = upper_case[new_letter]\n",
    "\n",
    "ciphertext = []\n",
    "for j in range(len(text)):\n",
    "    char = text[j]\n",
    "    if char in alphabet:\n",
    "        ciphertext.append(substitution[char])\n",
    "    else:\n",
    "        ciphertext.append(text[j])\n",
    "\n",
    "counts = Counter(ciphertext)\n",
    "letter_counts = []\n",
    "for letter in alphabet:\n",
    "    letter_counts.append(counts[letter])\n",
    "pplt.bar(range(len(alphabet)), letter_counts, tick_label=list(alphabet))\n",
    "pplt.show()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Block ciphers\n",
    "A **block cipher** operates on blocks of a **fixed length**. \n",
    "\n",
    "If the plaintext length is not an exact multiple of the block length, [padding](https://en.wikipedia.org/wiki/Padding_(cryptography)) is required.\n",
    "\n",
    "If the plaintext is longer than a single block length, a [mode of operation](https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation) specifies precisely how repeated application of the block cipher will generate the final ciphertext - see [SP 800-38A](https://csrc.nist.gov/publications/detail/sp/800-38a/final).\n",
    "\n",
    "The current standard for symmetric block ciphers is [AES](https://en.wikipedia.org/wiki/Advanced_Encryption_Standard) - see [FIPS 197](https://www.nist.gov/publications/advanced-encryption-standard-aes).\n",
    "\n",
    "Let's look at some symmetric encryption examples with [cryptography.io](https://cryptography.io/en/latest/hazmat/primitives/symmetric-encryption/).\n",
    "\n",
    "**Exercise**: encrypt a 128-bit message $m$ with AES-128."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "plaintext: oratories viscer, length: 16\n",
      "Padded plaintext length: 32\n",
      "Ciphertext: b'\\xd1!>\\x160\\x1b\\xf3k\\xd0\\xc7Pi~i\\x071\\xaaQ}\\xa8I\\xb2NvxK\\x81\\xa1\\tr\\xdef', length: 32\n",
      "Decrypted text: oratories viscer\n"
     ]
    }
   ],
   "source": [
    "from cryptography.hazmat.primitives import padding\n",
    "from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes\n",
    "from cryptography.hazmat.backends import default_backend\n",
    "import os\n",
    "import secrets\n",
    "\n",
    "backend = default_backend()\n",
    "\n",
    "## generate a cryptographically secure random key\n",
    "key = os.urandom(16)\n",
    "\n",
    "## specify the cipher we want to use\n",
    "cipher = Cipher(algorithms.AES(key), modes.ECB(), backend=backend)\n",
    "\n",
    "## prepare to encrypt a message\n",
    "encryptor = cipher.encryptor()\n",
    "\n",
    "# generate a 16-byte message with random words / XKCD-style passphrase https://xkcd.com/936/\n",
    "with open('/usr/share/dict/words') as f:\n",
    "    words = [word.strip() for word in f]\n",
    "    words = ' '.join(secrets.choice(words) for i in range(4))\n",
    "    \n",
    "# crop to block length for demonstration\n",
    "plaintext = words[0:16]\n",
    "print('plaintext: {0}, length: {1}'.format(plaintext, len(plaintext) ))\n",
    "\n",
    "# pad message\n",
    "padder = padding.PKCS7(128).padder()\n",
    "m = padder.update(plaintext.encode('utf-8'))\n",
    "m += padder.finalize()\n",
    "print('Padded plaintext length: {0}'.format(len(m)))\n",
    "\n",
    "#encrypt message\n",
    "ciphertext = encryptor.update(m) + encryptor.finalize()\n",
    "print('Ciphertext: {0}, length: {1}'.format(ciphertext, len(ciphertext)))\n",
    "\n",
    "# decrypt message\n",
    "decryptor = cipher.decryptor()\n",
    "d = decryptor.update(ciphertext) + decryptor.finalize()\n",
    "\n",
    "# remove padding\n",
    "unpadder = padding.PKCS7(128).unpadder()\n",
    "decrypted = unpadder.update(d)+unpadder.finalize()\n",
    "print('Decrypted text: {0}'.format(decrypted.decode(\"utf-8\")))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Exercise**: try changing a single letter of the message or the key, and verify that the ciphertext changes completely.\n",
    "\n",
    "## ECB mode\n",
    "Perhaps the simplest mode of operation is known as [electronic codebook](https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Electronic_Codebook_(ECB)) (ECB). Each block of plaintext is encrypted independently of the others, in parallel.\n",
    "\n",
    "![ECB mode](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d6/ECB_encryption.svg/601px-ECB_encryption.svg.png)\n",
    "\n",
    "**Exercise**: choose a 128-bit message. Concatenate the same 128-bit message with itself, and verify that using ECB mode the ciphertext is also repeated. An eavesdropper may not be able to tell what the message was, but they can tell the two parts were identical.\n",
    "\n",
    "**Exercise**: (optional but illustrative) to see at a glance why this is a problem, try replicating the famous [ECB penguin](https://blog.filippo.io/the-ecb-penguin/) example (see this article on [ECB mode](https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#ECB)). Hint: the following code to get you started downloads an image file from a url and saves it in [PPM](https://en.wikipedia.org/wiki/Netpbm_format) format."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "(196, 216)\n",
      "b'\\xfe\\xfe\\xfc\\xfe\\xfe\\xfc\\xfe\\xfe\\xfc\\xfe'\n"
     ]
    },
    {
     "data": {
      "image/png": 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\n",
      "text/plain": [
       "<PIL.PpmImagePlugin.PpmImageFile image mode=RGB size=196x216 at 0x7F4D571E4080>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Plaintext length: 42336\n",
      "Unpadded plaintext length: 127008\n",
      "Padded plaintext length: 127024\n"
     ]
    }
   ],
   "source": [
    "import requests\n",
    "import IPython.display as Disp\n",
    "import numpy\n",
    "from PIL import Image\n",
    "import matplotlib.pyplot as pplt\n",
    "from io import BytesIO\n",
    "\n",
    "backend = default_backend()\n",
    "\n",
    "# repeat the encryption steps above, using the penguin image as plaintext\n",
    "# but note well: you will only be able to visualize the effect if each \n",
    "key = os.urandom(16)\n",
    "cipher = Cipher(algorithms.AES(key), modes.ECB(), backend=backend)\n",
    "encryptor = cipher.encryptor()\n",
    "\n",
    "url = 'https://upload.wikimedia.org/wikipedia/commons/5/56/Tux.jpg'\n",
    "r = requests.get(url)\n",
    "#img = Disp.Image(r.content)\n",
    "#print('w: {0}, h: {1}'.format(img.width, img.height))\n",
    "\n",
    "img = Image.open(BytesIO(r.content))\n",
    "\n",
    "pixel_data = list(img.getdata())\n",
    "print(img.size)\n",
    "img.save('temp.ppm')\n",
    "a = Image.open('temp.ppm')\n",
    "print(a.tobytes()[0:10])\n",
    "Disp.display(a)\n",
    "\n",
    "print('Plaintext length: {0}'.format(len(pixel_data)))\n",
    "\n",
    "padder = padding.PKCS7(128).padder()\n",
    "p = padder.update(a.tobytes())\n",
    "q = len(p)\n",
    "print('Unpadded plaintext length: {0}'.format(q))\n",
    "p += padder.finalize()\n",
    "print('Padded plaintext length: {0}'.format(len(p)))\n",
    "ct = encryptor.update(p) + encryptor.finalize()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## CBC mode\n",
    "In [cipher block chaining](https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/CBC_encryption.svg/601px-CBC_encryption.svg.png) (CBC) mode, each block of ciphertext is XORed with the next block of plaintext before encryption: ![CBC mode](https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/CBC_encryption.svg/601px-CBC_encryption.svg.png)\n",
    "This is a serial mode of operation; encryption cannot be sped up by parallelizing tasks.\n",
    "\n",
    "**Exercise**: pick a message of the same length as the block cipher. Concatenate the message with itself two or more times. Encrypt the plaintext using a block cipher in CBC mode, and verify that the corresponding ciphertext blocks are different, unlike ECB mode."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Cipher-based MAC (CMAC)\n",
    "Ciphers are designed to provide confidentiality. ECB and CBC mode are examples.\n",
    "\n",
    "Ciphers do *not* provide integrity or authenticity of a message by themselves, unless used in a specific mode of operation designed to guarantee those properties.\n",
    "\n",
    "The only currently approved mode of operation designed to provide integrity and authenticity is [cipher-based message authentication code (CMAC)](https://en.wikipedia.org/wiki/One-key_MAC). ![CMAC](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e2/CMAC_-_Cipher-based_Message_Authentication_Code.pdf/page1-800px-CMAC_-_Cipher-based_Message_Authentication_Code.pdf.jpg)\n",
    "\n",
    "**Exercise**: compute the CMAC of the same message you used for the HMAC exercise above. Refer to the [documentation](https://cryptography.io/en/latest/hazmat/primitives/mac/cmac/?highlight=CMAC) for relevant functions."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Authenticated encryption\n",
    "Ciphers are designed to provide confidentiality - but they do *not* provide integrity or authenticity of a message by themselves, unless used as part of a more complex algorithm. [Authenticated Encryption](https://en.wikipedia.org/wiki/Authenticated_encryption) is designed to do just that. One method to achieve authenticated encryption is to *encrypt-then-MAC*.\n",
    "\n",
    "More generally, a class of algorithms known as authenticated encryption with associated data (AEAD) has been identified in order to provide a flexible combination of confidentality and authenticity - in that some data are encrypted, some are not, and all are authenticated.\n",
    "\n",
    "For example, the AES-GCM (see [SP 800-38d](https://csrc.nist.gov/publications/detail/sp/800-38d/final)).\n",
    "\n",
    "**Exercise**: encrypt and decrypt a message and some associated data using AES-GCM. Refer to the [documentation](https://cryptography.io/en/latest/hazmat/primitives/aead/#cryptography.hazmat.primitives.ciphers.aead.AESGCM) for details. Check that changing the associated data in decryption leads to an error."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [],
   "source": [
    "import os\n",
    "from cryptography.hazmat.primitives.ciphers.aead import AESGCM\n",
    "data = 'a secret message'.encode('utf-8')\n",
    "aad = 'authenticated but unencrypted data'.encode('utf-8')\n",
    "key = AESGCM.generate_key(bit_length=128)\n",
    "aesgcm = AESGCM(key)\n",
    "# AESGCM requires a nonce. You will have to choose its length!\n",
    "# encrypt\n",
    "# decrypt"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Standards\n",
    "[Key management](https://csrc.nist.gov/Projects/Key-Management/Key-Management-Guidelines) is critical to the security of any application.\n",
    "\n",
    "Lists of government-approved algorithms, parameters, and key sizes for cryptography are maintained by [NIST](https://csrc.nist.gov/projects/block-cipher-techniques) and [ENISA](https://www.enisa.europa.eu/publications/algorithms-key-size-and-parameters-report-2014).\n",
    "\n",
    "A list of approved [block cipher modes of operation](https://csrc.nist.gov/projects/block-cipher-techniques/bcm/current-modes) is maintained by NIST.\n",
    "> Currently, NIST has approved fourteen modes of the approved block ciphers in a series of special publications. As summarized on the [Current Modes](https://csrc.nist.gov/projects/block-cipher-techniques/bcm/current-modes) page, there are eight confidentiality modes (ECB, CBC, OFB, CFB, CTR, XTS-AES, FF1, and FF3), one authentication mode (CMAC), and five combined modes for confidentiality and authentication (CCM, GCM, KW, KWP, and TKW)."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Theme\n",
    "You can run the following cell to change the appearance of this notebook to suit your taste. Check for available themes on [github.com/dunovank/jupyter-themes](https://github.com/dunovank/jupyter-themes)."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "<style> div#notebook {\n",
       " font-family: sans-serif;\n",
       " font-size: 13pt;\n",
       " line-height: 170%;\n",
       " color: #303030;\n",
       " -webkit-font-smoothing: antialiased !important;\n",
       " padding-top: 25px !important;\n",
       "}\n",
       "body,\n",
       "div.body {\n",
       " font-family: sans-serif;\n",
       " font-size: 13pt;\n",
       " color: #303030;\n",
       " background-color: #ffffff;\n",
       " background: #ffffff;\n",
       " -webkit-font-smoothing: antialiased !important;\n",
       "}\n",
       "body.notebook_app {\n",
       " padding: 0;\n",
       " background-color: #ffffff;\n",
       " background: #ffffff;\n",
       " padding-right: 0px !important;\n",
       " overflow-y: hidden;\n",
       "}\n",
       "a {\n",
       " font-family: sans-serif;\n",
       " color: #303030;\n",
       " -webkit-font-smoothing: antialiased !important;\n",
       "}\n",
       "a:hover,\n",
       "a:focus {\n",
       " color: #2f2f2f;\n",
       " -webkit-font-smoothing: antialiased !important;\n",
       "}\n",
       "div#maintoolbar {\n",
       " position: absolute;\n",
       " width: 90%;\n",
       " margin-left: -10%;\n",
       " padding-right: 8%;\n",
       " float: left;\n",
       " background: transparent !important;\n",
       "}\n",
       "#maintoolbar {\n",
       " margin-bottom: -3px;\n",
       " margin-top: 0px;\n",
       " border: 0px;\n",
       " min-height: 27px;\n",
       " padding-top: 2px;\n",
       " padding-bottom: 0px;\n",
       "}\n",
       "#maintoolbar .container {\n",
       " width: 75%;\n",
       " margin-right: auto;\n",
       " margin-left: auto;\n",
       "}\n",
       ".list_header,\n",
       "div#notebook_list_header.row.list_header {\n",
       " font-size: 14pt;\n",
       " color: #2f2f2f;\n",
       " background-color: transparent;\n",
       " height: 35px;\n",
       "}\n",
       "i.fa.fa-folder {\n",
       " display: inline-block;\n",
       " font: normal normal normal 14px \"FontAwesome\";\n",
       " font-family: \"FontAwesome\" !important;\n",
       " text-rendering: auto;\n",
       " -webkit-font-smoothing: antialiased;\n",
       " font-size: 18px;\n",
       " -moz-osx-font-smoothing: grayscale;\n",
       "}\n",
       "#running .panel-group .panel .panel-heading {\n",
       " font-size: 14pt;\n",
       " color: #303030;\n",
       " padding: 8px 8px;\n",
       " background: #e4e4e4;\n",
       " background-color: #e4e4e4;\n",
       "}\n",
       "#running .panel-group .panel .panel-heading a {\n",
       " font-size: 14pt;\n",
       " color: #303030;\n",
       "}\n",
       "#running .panel-group .panel .panel-heading a:focus,\n",
       "#running .panel-group .panel .panel-heading a:hover {\n",
       " font-size: 14pt;\n",
       " color: #303030;\n",
       "}\n",
       "#running .panel-group .panel .panel-body .list_container .list_item {\n",
       " background: #f4f4f4;\n",
       " background-color: #f4f4f4;\n",
       " padding: 2px;\n",
       " border-bottom: 2px solid #dedede;\n",
       "}\n",
       "#running .panel-group .panel .panel-body .list_container .list_item:hover {\n",
       " background: #f4f4f4;\n",
       " background-color: #f4f4f4;\n",
       "}\n",
       "#running .panel-group .panel .panel-body {\n",
       " padding: 2px;\n",
       "}\n",
       "button#refresh_running_list {\n",
       " border: none !important;\n",
       "}\n",
       "button#refresh_cluster_list {\n",
       " border: none !important;\n",
       "}\n",
       "div.running_list_info.toolbar_info {\n",
       " font-size: 15px;\n",
       " padding: 4px 0 4px 0;\n",
       " margin-top: 5px;\n",
       " margin-bottom: 8px;\n",
       " height: 24px;\n",
       " line-height: 24px;\n",
       " text-shadow: none;\n",
       "}\n",
       ".list_placeholder {\n",
       " font-weight: normal;\n",
       "}\n",
       "#tree-selector {\n",
       " padding: 0px;\n",
       " border-color: transparent;\n",
       "}\n",
       "#project_name > ul > li > a > i.fa.fa-home {\n",
       " color: #ff7823;\n",
       " font-size: 17pt;\n",
       " display: inline-block;\n",
       " position: static;\n",
       " padding: 0px 0px;\n",
       " font-weight: normal;\n",
       " text-align: center;\n",
       " vertical-align: text-top;\n",
       "}\n",
       ".fa-folder:before {\n",
       " color: #126dce;\n",
       "}\n",
       ".fa-arrow-up:before {\n",
       " font-size: 14px;\n",
       "}\n",
       ".fa-arrow-down:before {\n",
       " font-size: 14px;\n",
       "}\n",
       "span#last-modified.btn.btn-xs.btn-default.sort-action:hover .fa,\n",
       "span#sort-name.btn.btn-xs.btn-default.sort-action:hover .fa {\n",
       " color: #ef5c00;\n",
       "}\n",
       ".folder_icon:before {\n",
       " display: inline-block;\n",
       " font: normal normal normal 14px/1 FontAwesome;\n",
       " font-size: inherit;\n",
       " text-rendering: auto;\n",
       " -webkit-font-smoothing: antialiased;\n",
       " -moz-osx-font-smoothing: grayscale;\n",
       " content: \"\\f07b\";\n",
       " color: #126dce;\n",
       "}\n",
       ".notebook_icon:before {\n",
       " display: inline-block;\n",
       " font: normal normal normal 14px/1 FontAwesome;\n",
       " font-size: inherit;\n",
       " text-rendering: auto;\n",
       " -webkit-font-smoothing: antialiased;\n",
       " -moz-osx-font-smoothing: grayscale;\n",
       " content: \"\\f02d\";\n",
       " position: relative;\n",
       " color: #009e07 !important;\n",
       " top: 0px;\n",
       "}\n",
       ".file_icon:before {\n",
       " display: inline-block;\n",
       " font: normal normal normal 14px/1 FontAwesome;\n",
       " font-size: inherit;\n",
       " text-rendering: auto;\n",
       " -webkit-font-smoothing: antialiased;\n",
       " -moz-osx-font-smoothing: grayscale;\n",
       " content: \"\\f15b\";\n",
       " position: relative;\n",
       " top: 0px;\n",
       " color: #6a737d !important;\n",
       "}\n",
       "#project_name a {\n",
       " display: inline-flex;\n",
       " padding-left: 7px;\n",
       " margin-left: -2px;\n",
       " text-align: -webkit-auto;\n",
       " vertical-align: baseline;\n",
       " font-size: 18px;\n",
       "}\n",
       "div#notebook_toolbar div.dynamic-instructions {\n",
       " font-family: sans-serif;\n",
       " font-size: 17px;\n",
       " color: #828892;\n",
       "}\n",
       "span#login_widget > .button,\n",
       "#logout {\n",
       " font-family: \"Proxima Nova\", sans-serif;\n",
       " color: #303030;\n",
       " background: transparent;\n",
       " background-color: transparent;\n",
       " border: 2px solid #e5e5e5;\n",
       " font-weight: normal;\n",
       " box-shadow: none;\n",
       " text-shadow: none;\n",
       " border-radius: 3px;\n",
       " margin-right: 10px;\n",
       " padding: 2px 7px;\n",
       "}\n",
       "span#login_widget > .button:hover,\n",
       "#logout:hover {\n",
       " color: #ef5c00;\n",
       " background-color: transparent;\n",
       " background: transparent;\n",
       " border: 2px solid #ef5c00;\n",
       " background-image: none;\n",
       " box-shadow: none !important;\n",
       " border-radius: 3px;\n",
       "}\n",
       "span#login_widget > .button:focus,\n",
       "#logout:focus,\n",
       "span#login_widget > .button.focus,\n",
       "#logout.focus,\n",
       "span#login_widget > .button:active,\n",
       "#logout:active,\n",
       "span#login_widget > .button.active,\n",
       "#logout.active,\n",
       ".open > .dropdown-togglespan#login_widget > .button,\n",
       ".open > .dropdown-toggle#logout {\n",
       " color: #1c1c1c;\n",
       " background-color: #303030;\n",
       " background: #303030;\n",
       " border-color: #303030;\n",
       " background-image: none;\n",
       " box-shadow: none !important;\n",
       " border-radius: 2px;\n",
       "}\n",
       "body > #header #header-container {\n",
       " padding-bottom: 0px;\n",
       " padding-top: 4px;\n",
       " box-sizing: border-box;\n",
       " -moz-box-sizing: border-box;\n",
       " -webkit-box-sizing: border-box;\n",
       "}\n",
       "body > #header {\n",
       " background: #ffffff;\n",
       " background-color: #ffffff;\n",
       " position: relative;\n",
       " z-index: 100;\n",
       "}\n",
       ".list_container {\n",
       " font-size: 13pt;\n",
       " color: #303030;\n",
       " border: none;\n",
       " text-shadow: none !important;\n",
       "}\n",
       ".list_container > div {\n",
       " border-bottom: 1px solid rgba(180,180,180,.14);\n",
       " font-size: 13pt;\n",
       "}\n",
       ".list_header > div,\n",
       ".list_item > div {\n",
       " padding-top: 6px;\n",
       " padding-bottom: 2px;\n",
       " padding-left: 0px;\n",
       "}\n",
       ".list_header > div .item_link,\n",
       ".list_item > div .item_link {\n",
       " margin-left: -1px;\n",
       " vertical-align: middle;\n",
       " line-height: 22px;\n",
       " font-size: 13pt;\n",
       "}\n",
       ".item_icon {\n",
       " color: #126dce;\n",
       " font-size: 13pt;\n",
       " vertical-align: middle;\n",
       "}\n",
       ".list_item input:not([type=\"checkbox\"]) {\n",
       " padding-right: 0px;\n",
       " height: 1.75em;\n",
       " width: 25%;\n",
       " margin: 0px 0 0;\n",
       " margin-top: 0px;\n",
       "}\n",
       ".list_header > div .item_link,\n",
       ".list_item > div .item_link {\n",
       " margin-left: -1px;\n",
       " vertical-align: middle;\n",
       " line-height: 1.5em;\n",
       " font-size: 12pt;\n",
       " display: inline-table;\n",
       " position: static;\n",
       "}\n",
       "#button-select-all {\n",
       " height: 34px;\n",
       " min-width: 55px;\n",
       " z-index: 0;\n",
       " border: none !important;\n",
       " padding-top: 0px;\n",
       " padding-bottom: 0px;\n",
       " margin-bottom: 0px;\n",
       " margin-top: 0px;\n",
       " left: -3px;\n",
       " border-radius: 0px !important;\n",
       "}\n",
       "#button-select-all:focus,\n",
       "#button-select-all:active:focus,\n",
       "#button-select-all.active:focus,\n",
       "#button-select-all.focus,\n",
       "#button-select-all:active.focus,\n",
       "#button-select-all.active.focus {\n",
       " background-color: #e5e5e5 !important;\n",
       " background: #e5e5e5 !important;\n",
       "}\n",
       "button#tree-selector-btn {\n",
       " height: 34px;\n",
       " font-size: 12.0pt;\n",
       " border: none;\n",
       " left: 0px;\n",
       " border-radius: 0px !important;\n",
       "}\n",
       "input#select-all.pull-left.tree-selector {\n",
       " margin-left: 7px;\n",
       " margin-right: 2px;\n",
       " margin-top: 2px;\n",
       " top: 4px;\n",
       "}\n",
       "input[type=\"radio\"],\n",
       "input[type=\"checkbox\"] {\n",
       " margin-top: 1px;\n",
       " line-height: normal;\n",
       "}\n",
       ".delete-button {\n",
       " border: none !important;\n",
       "}\n",
       "i.fa.fa-trash {\n",
       " font-size: 13.5pt;\n",
       "}\n",
       ".list_container a {\n",
       " font-size: 16px;\n",
       " color: #303030;\n",
       " border: none;\n",
       " text-shadow: none !important;\n",
       " font-weight: normal;\n",
       " font-style: normal;\n",
       "}\n",
       "div.list_container a:hover {\n",
       " color: #2f2f2f;\n",
       "}\n",
       ".list_header > div input,\n",
       ".list_item > div input {\n",
       " margin-right: 7px;\n",
       " margin-left: 12px;\n",
       " vertical-align: baseline;\n",
       " line-height: 22px;\n",
       " position: relative;\n",
       " top: -1px;\n",
       "}\n",
       "div.list_item:hover {\n",
       " background-color: #fafafa;\n",
       "}\n",
       ".breadcrumb > li {\n",
       " font-size: 12.0pt;\n",
       " color: #303030;\n",
       " border: none;\n",
       " text-shadow: none !important;\n",
       "}\n",
       ".breadcrumb > li + li:before {\n",
       " content: \"/\\00a0\";\n",
       " padding: 0px;\n",
       " color: #303030;\n",
       " font-size: 18px;\n",
       "}\n",
       "#project_name > .breadcrumb {\n",
       " padding: 0px;\n",
       " margin-bottom: 0px;\n",
       " background-color: transparent;\n",
       " font-weight: normal;\n",
       " margin-top: -2px;\n",
       "}\n",
       "ul#tabs a {\n",
       " font-family: sans-serif;\n",
       " font-size: 13.5pt;\n",
       " font-weight: normal;\n",
       " font-style: normal;\n",
       " text-shadow: none !important;\n",
       "}\n",
       ".nav-tabs {\n",
       " font-family: sans-serif;\n",
       " font-size: 13.5pt;\n",
       " font-weight: normal;\n",
       " font-style: normal;\n",
       " background-color: transparent;\n",
       " border-color: transparent;\n",
       " text-shadow: none !important;\n",
       " border: 2px solid transparent;\n",
       "}\n",
       ".nav-tabs > li > a:active,\n",
       ".nav-tabs > li > a:focus,\n",
       ".nav-tabs > li > a:hover,\n",
       ".nav-tabs > li.active > a,\n",
       ".nav-tabs > li.active > a:focus,\n",
       ".nav-tabs > li.active > a:hover,\n",
       ".nav-tabs > li.active > a,\n",
       ".nav-tabs > li.active > a:hover,\n",
       ".nav-tabs > li.active > a:focus {\n",
       " color: #ef5c00;\n",
       " background-color: transparent;\n",
       " border-color: transparent;\n",
       " border-bottom: 2px solid transparent;\n",
       "}\n",
       ".nav > li.disabled > a,\n",
       ".nav > li.disabled > a:hover {\n",
       " color: #828892;\n",
       "}\n",
       ".nav-tabs > li > a:before {\n",
       " content: \"\";\n",
       " position: absolute;\n",
       " width: 100%;\n",
       " height: 2px;\n",
       " bottom: -2px;\n",
       " left: 0;\n",
       " background-color: #ef5c00;\n",
       " visibility: hidden;\n",
       " -webkit-transform: perspective(0)scaleX(0);\n",
       " transform: perspective(0)scaleX(0);\n",
       " -webkit-transition: ease 220ms;\n",
       " transition: ease 220ms;\n",
       " -webkit-font-smoothing: antialiased !important;\n",
       "}\n",
       ".nav-tabs > li > a:hover:before {\n",
       " visibility: visible;\n",
       " -webkit-transform: perspective(1)scaleX(1);\n",
       " transform: perspective(1)scaleX(1);\n",
       "}\n",
       ".nav-tabs > li.active > a:before {\n",
       " content: \"\";\n",
       " position: absolute;\n",
       " width: 100%;\n",
       " height: 2px;\n",
       " bottom: -2px;\n",
       " left: 0;\n",
       " background-color: #ef5c00;\n",
       " visibility: visible;\n",
       " -webkit-transform: perspective(1)scaleX(1);\n",
       " transform: perspective(1)scaleX(1);\n",
       " -webkit-font-smoothing: subpixel-antialiased !important;\n",
       "}\n",
       "div#notebook {\n",
       " font-family: sans-serif;\n",
       " font-size: 13pt;\n",
       " padding-top: 4px;\n",
       "}\n",
       ".notebook_app {\n",
       " background-color: #ffffff;\n",
       "}\n",
       "#notebook-container {\n",
       " padding: 13px 2px;\n",
       " background-color: #ffffff;\n",
       " min-height: 0px;\n",
       " box-shadow: none;\n",
       " width: 980px;\n",
       " margin-right: auto;\n",
       " margin-left: auto;\n",
       "}\n",
       "div#ipython-main-app.container {\n",
       " width: 980px;\n",
       " margin-right: auto;\n",
       " margin-left: auto;\n",
       " margin-right: auto;\n",
       " margin-left: auto;\n",
       "}\n",
       ".container {\n",
       " width: 980px;\n",
       " margin-right: auto;\n",
       " margin-left: auto;\n",
       "}\n",
       "div#menubar-container {\n",
       " width: 100%;\n",
       " width: 980px;\n",
       "}\n",
       "div#header-container {\n",
       " width: 980px;\n",
       "}\n",
       ".notebook_app #header,\n",
       ".edit_app #header {\n",
       " box-shadow: none !important;\n",
       " background-color: #ffffff;\n",
       " border-bottom: 2px solid rgba(180,180,180,.14);\n",
       "}\n",
       "#header,\n",
       ".edit_app #header {\n",
       " font-family: sans-serif;\n",
       " font-size: 13pt;\n",
       " box-shadow: none;\n",
       " background-color: #ffffff;\n",
       "}\n",
       "#header .header-bar,\n",
       ".edit_app #header .header-bar {\n",
       " background: #ffffff;\n",
       " background-color: #ffffff;\n",
       "}\n",
       "body > #header .header-bar {\n",
       " width: 100%;\n",
       " background: #ffffff;\n",
       "}\n",
       "span.checkpoint_status,\n",
       "span.autosave_status {\n",
       " font-size: small;\n",
       " display: none;\n",
       "}\n",
       "#menubar,\n",
       "div#menubar {\n",
       " background-color: #ffffff;\n",
       " padding-top: 0px !important;\n",
       "}\n",
       "#menubar .navbar,\n",
       ".navbar-default {\n",
       " background-color: #ffffff;\n",
       " margin-bottom: 0px;\n",
       " margin-top: 0px;\n",
       "}\n",
       ".navbar {\n",
       " border: none;\n",
       "}\n",
       "div.navbar-text,\n",
       ".navbar-text,\n",
       ".navbar-text.indicator_area,\n",
       "p.navbar-text.indicator_area {\n",
       " margin-top: 8px !important;\n",
       " margin-bottom: 0px;\n",
       " color: #ff7823;\n",
       "}\n",
       ".navbar-default {\n",
       " font-family: sans-serif;\n",
       " font-size: 13pt;\n",
       " background-color: #ffffff;\n",
       " border-color: #d4d4d4;\n",
       " line-height: 1.5em;\n",
       " padding-bottom: 0px;\n",
       "}\n",
       ".navbar-default .navbar-nav > li > a {\n",
       " font-family: sans-serif;\n",
       " font-size: 13pt;\n",
       " color: #303030;\n",
       " display: block;\n",
       " line-height: 1.5em;\n",
       " padding-top: 14px;\n",
       " padding-bottom: 11px;\n",
       "}\n",
       ".navbar-default .navbar-nav > li > a:hover,\n",
       ".navbar-default .navbar-nav > li > a:focus {\n",
       " color: #2f2f2f !important;\n",
       " background-color: rgba(180,180,180,.14) !important;\n",
       " border-color: #d4d4d4 !important;\n",
       " line-height: 1.5em;\n",
       " transition: 80ms ease;\n",
       "}\n",
       ".navbar-default .navbar-nav > .open > a,\n",
       ".navbar-default .navbar-nav > .open > a:hover,\n",
       ".navbar-default .navbar-nav > .open > a:focus {\n",
       " color: #1c1c1c;\n",
       " background-color: #dedede;\n",
       " border-color: #dedede;\n",
       " line-height: 1.5em;\n",
       "}\n",
       ".navbar-nav > li > .dropdown-menu {\n",
       " margin-top: 0px;\n",
       "}\n",
       ".navbar-nav {\n",
       " margin: 0;\n",
       "}\n",
       "div.notification_widget.info,\n",
       ".notification_widget.info,\n",
       ".notification_widget:active:hover,\n",
       ".notification_widget.active:hover,\n",
       ".open > .dropdown-toggle.notification_widget:hover,\n",
       ".notification_widget:active:focus,\n",
       ".notification_widget.active:focus,\n",
       ".open > .dropdown-toggle.notification_widget:focus,\n",
       ".notification_widget:active.focus,\n",
       ".notification_widget.active.focus,\n",
       ".open > .dropdown-toggle.notification_widget.focus,\n",
       "div#notification_notebook.notification_widget.btn.btn-xs.navbar-btn,\n",
       "div#notification_notebook.notification_widget.btn.btn-xs.navbar-btn:hover,\n",
       "div#notification_notebook.notification_widget.btn.btn-xs.navbar-btn:focus {\n",
       " color: #303030 !important;\n",
       " background-color: transparent !important;\n",
       " border-color: transparent !important;\n",
       " padding-bottom: 0px !important;\n",
       " margin-bottom: 0px !important;\n",
       " font-size: 9pt !important;\n",
       " z-index: 0;\n",
       "}\n",
       "div#notification_notebook.notification_widget.btn.btn-xs.navbar-btn {\n",
       " font-size: 9pt !important;\n",
       " z-index: 0;\n",
       "}\n",
       ".notification_widget {\n",
       " color: #126dce;\n",
       " z-index: -500;\n",
       " font-size: 9pt;\n",
       " background: transparent;\n",
       " background-color: transparent;\n",
       " margin-right: 3px;\n",
       " border: none;\n",
       "}\n",
       ".notification_widget,\n",
       "div.notification_widget {\n",
       " margin-right: 0px;\n",
       " margin-left: 0px;\n",
       " padding-right: 0px;\n",
       " vertical-align: text-top !important;\n",
       " margin-top: 6px !important;\n",
       " background: transparent !important;\n",
       " background-color: transparent !important;\n",
       " font-size: 9pt !important;\n",
       " border: none;\n",
       "}\n",
       ".navbar-btn.btn-xs:hover {\n",
       " border: none !important;\n",
       " background: transparent !important;\n",
       " background-color: transparent !important;\n",
       " color: #303030 !important;\n",
       "}\n",
       "div.notification_widget.info,\n",
       ".notification_widget.info {\n",
       " display: none !important;\n",
       "}\n",
       ".edit_mode .modal_indicator:before {\n",
       " display: none;\n",
       "}\n",
       ".command_mode .modal_indicator:before {\n",
       " display: none;\n",
       "}\n",
       ".item_icon {\n",
       " color: #126dce;\n",
       "}\n",
       ".item_buttons .kernel-name {\n",
       " font-size: 13pt;\n",
       " color: #126dce;\n",
       "}\n",
       ".running_notebook_icon:before {\n",
       " color: #009e07 !important;\n",
       " font: normal normal normal 15px/1 FontAwesome;\n",
       " font-size: 15px;\n",
       " text-rendering: auto;\n",
       " -webkit-font-smoothing: antialiased;\n",
       " -moz-osx-font-smoothing: grayscale;\n",
       " content: \"\\f10c\";\n",
       " vertical-align: middle;\n",
       " position: static;\n",
       " display: inherit;\n",
       "}\n",
       ".item_buttons .running-indicator {\n",
       " padding-top: 4px;\n",
       " color: #009e07;\n",
       " font-family: sans-serif;\n",
       " text-rendering: auto;\n",
       " -webkit-font-smoothing: antialiased;\n",
       "}\n",
       "#notification_trusted {\n",
       " font-family: sans-serif;\n",
       " border: none;\n",
       " background: transparent;\n",
       " background-color: transparent;\n",
       " margin-bottom: 0px !important;\n",
       " vertical-align: bottom !important;\n",
       " color: #828892 !important;\n",
       " cursor: default !important;\n",
       "}\n",
       "#notification_area,\n",
       "div.notification_area {\n",
       " float: right !important;\n",
       " position: static;\n",
       " cursor: pointer;\n",
       " padding-top: 6px;\n",
       " padding-right: 4px;\n",
       "}\n",
       "div#notification_notebook.notification_widget.btn.btn-xs.navbar-btn {\n",
       " font-size: 9pt !important;\n",
       " z-index: 0;\n",
       " margin-top: -5px !important;\n",
       "}\n",
       "#modal_indicator {\n",
       " float: right !important;\n",
       " color: #4c8be2;\n",
       " background: #ffffff;\n",
       " background-color: #ffffff;\n",
       " margin-top: 8px !important;\n",
       " margin-left: 0px;\n",
       "}\n",
       "#kernel_indicator {\n",
       " float: right !important;\n",
       " color: #ff7823;\n",
       " background: #ffffff;\n",
       " background-color: #ffffff;\n",
       " border-left: 2px solid #ff7823;\n",
       " padding-top: 0px;\n",
       " padding-bottom: 4px;\n",
       " margin-top: 10px !important;\n",
       " margin-left: -2px;\n",
       " padding-left: 5px !important;\n",
       "}\n",
       "#kernel_indicator .kernel_indicator_name {\n",
       " font-size: 17px;\n",
       " color: #ff7823;\n",
       " background: #ffffff;\n",
       " background-color: #ffffff;\n",
       " padding-left: 5px;\n",
       " padding-right: 5px;\n",
       " margin-top: 4px;\n",
       " vertical-align: text-top;\n",
       " padding-bottom: 0px;\n",
       "}\n",
       ".kernel_idle_icon:before {\n",
       " display: inline-block;\n",
       " font: normal normal normal 22px/1 FontAwesome;\n",
       " font-size: 22px;\n",
       " text-rendering: auto;\n",
       " -webkit-font-smoothing: antialiased;\n",
       " cursor: pointer;\n",
       " margin-left: 0px !important;\n",
       " opacity: 0.7;\n",
       " vertical-align: bottom;\n",
       " margin-top: 1px;\n",
       " content: \"\\f1db\";\n",
       "}\n",
       ".kernel_busy_icon:before {\n",
       " display: inline-block;\n",
       " font: normal normal normal 22px/1 FontAwesome;\n",
       " font-size: 22px;\n",
       " -webkit-animation: pulsate 2s infinite ease-out;\n",
       " animation: pulsate 2s infinite ease-out;\n",
       " text-rendering: auto;\n",
       " -webkit-font-smoothing: antialiased;\n",
       " cursor: pointer;\n",
       " margin-left: 0px !important;\n",
       " vertical-align: bottom;\n",
       " margin-top: 1px;\n",
       " content: \"\\f111\";\n",
       "}\n",
       "@-webkit-keyframes pulsate {\n",
       " 0% {\n",
       "  -webkit-transform: scale(1.0,1.0);\n",
       "  opacity: 0.8;\n",
       " }\n",
       " 8% {\n",
       "  -webkit-transform: scale(1.0,1.0);\n",
       "  opacity: 0.8;\n",
       " }\n",
       " 50% {\n",
       "  -webkit-transform: scale(0.75,0.75);\n",
       "  opacity: 0.3;\n",
       " }\n",
       " 92% {\n",
       "  -webkit-transform: scale(1.0,1.0);\n",
       "  opacity: 0.8;\n",
       " }\n",
       " 100% {\n",
       "  -webkit-transform: scale(1.0,1.0);\n",
       "  opacity: 0.8;\n",
       " }\n",
       "}\n",
       "div.notification_widget.info,\n",
       ".notification_widget.info,\n",
       ".notification_widget:active:hover,\n",
       ".notification_widget.active:hover,\n",
       ".open > .dropdown-toggle.notification_widget:hover,\n",
       ".notification_widget:active:focus,\n",
       ".notification_widget.active:focus,\n",
       ".open > .dropdown-toggle.notification_widget:focus,\n",
       ".notification_widget:active.focus,\n",
       ".notification_widget.active.focus,\n",
       ".open > .dropdown-toggle.notification_widget.focus,\n",
       "div#notification_notebook.notification_widget.btn.btn-xs.navbar-btn,\n",
       "div#notification_notebook.notification_widget.btn.btn-xs.navbar-btn:hover,\n",
       "div#notification_notebook.notification_widget.btn.btn-xs.navbar-btn:focus {\n",
       " color: #303030;\n",
       " background-color: #ffffff;\n",
       " border-color: #ffffff;\n",
       "}\n",
       "#notification_area,\n",
       "div.notification_area {\n",
       " float: right !important;\n",
       " position: static;\n",
       "}\n",
       ".notification_widget,\n",
       "div.notification_widget {\n",
       " margin-right: 0px;\n",
       " margin-left: 0px;\n",
       " padding-right: 0px;\n",
       " vertical-align: text-top !important;\n",
       " margin-top: 6px !important;\n",
       " z-index: 1000;\n",
       "}\n",
       "#kernel_logo_widget,\n",
       "#kernel_logo_widget .current_kernel_logo {\n",
       " display: none;\n",
       "}\n",
       "div#ipython_notebook {\n",
       " display: none;\n",
       "}\n",
       "i.fa.fa-icon {\n",
       " -webkit-font-smoothing: antialiased;\n",
       " -moz-osx-font-smoothing: grayscale;\n",
       " text-rendering: auto;\n",
       "}\n",
       ".fa {\n",
       " display: inline-block;\n",
       " font: normal normal normal 10pt/1 \"FontAwesome\", sans-serif;\n",
       " text-rendering: auto;\n",
       " -webkit-font-smoothing: antialiased;\n",
       " -moz-osx-font-smoothing: grayscale;\n",
       "}\n",
       ".dropdown-menu {\n",
       " font-family: sans-serif;\n",
       " font-size: 13pt;\n",
       " box-shadow: none;\n",
       " padding: 0px;\n",
       " text-align: left;\n",
       " border: none;\n",
       " background-color: #dedede;\n",
       " background: #dedede;\n",
       " line-height: 1;\n",
       "}\n",
       ".dropdown-menu:hover {\n",
       " font-family: sans-serif;\n",
       " font-size: 13pt;\n",
       " box-shadow: none;\n",
       " padding: 0px;\n",
       " text-align: left;\n",
       " border: none;\n",
       " background-color: #dedede;\n",
       " box-shadow: none;\n",
       " line-height: 1;\n",
       "}\n",
       ".dropdown-menu > li > a {\n",
       " font-family: sans-serif;\n",
       " font-size: 12.0pt;\n",
       " display: block;\n",
       " padding: 10px 20px 9px 10px;\n",
       " color: #303030;\n",
       " background-color: #dedede;\n",
       " background: #dedede;\n",
       "}\n",
       ".dropdown-menu > li > a:hover,\n",
       ".dropdown-menu > li > a:focus {\n",
       " color: #2f2f2f;\n",
       " background-color: #d4d4d4;\n",
       " background: #d4d4d4;\n",
       " border-color: #d4d4d4;\n",
       " transition: 200ms ease;\n",
       "}\n",
       ".dropdown-menu .divider {\n",
       " height: 1px;\n",
       " margin: 0px 0px;\n",
       " overflow: hidden;\n",
       " background-color: rgba(180,180,180,.30);\n",
       "}\n",
       ".dropdown-submenu > .dropdown-menu {\n",
       " display: none;\n",
       " top: 2px !important;\n",
       " left: 100%;\n",
       " margin-top: -2px;\n",
       " margin-left: 0px;\n",
       " padding-top: 0px;\n",
       " transition: 200ms ease;\n",
       "}\n",
       ".dropdown-menu > .disabled > a,\n",
       ".dropdown-menu > .disabled > a:hover,\n",
       ".dropdown-menu > .disabled > a:focus {\n",
       " font-family: sans-serif;\n",
       " font-size: 12.0pt;\n",
       " font-weight: normal;\n",
       " color: #828892;\n",
       " padding: none;\n",
       " display: block;\n",
       " clear: both;\n",
       " white-space: nowrap;\n",
       "}\n",
       ".dropdown-submenu > a:after {\n",
       " color: #303030;\n",
       " margin-right: -16px;\n",
       " margin-top: 0px;\n",
       " display: inline-block;\n",
       "}\n",
       ".dropdown-submenu:hover > a:after,\n",
       ".dropdown-submenu:active > a:after,\n",
       ".dropdown-submenu:focus > a:after,\n",
       ".dropdown-submenu:visited > a:after {\n",
       " color: #ff7823;\n",
       " margin-right: -16px;\n",
       " display: inline-block !important;\n",
       "}\n",
       "div.kse-dropdown > .dropdown-menu,\n",
       ".kse-dropdown > .dropdown-menu {\n",
       " min-width: 0;\n",
       " top: 94%;\n",
       "}\n",
       ".btn,\n",
       ".btn-default {\n",
       " font-family: sans-serif;\n",
       " color: #303030;\n",
       " background: #e5e5e5;\n",
       " background-color: #e5e5e5;\n",
       " border: 2px solid #e5e5e5;\n",
       " font-weight: normal;\n",
       " box-shadow: none;\n",
       " text-shadow: none;\n",
       " border-radius: 3px;\n",
       " font-size: initial;\n",
       "}\n",
       ".btn:hover,\n",
       ".btn:active:hover,\n",
       ".btn.active:hover,\n",
       ".btn-default:hover,\n",
       ".open > .dropdown-toggle.btn-default:hover,\n",
       ".open > .dropdown-toggle.btn:hover {\n",
       " color: #ef5c00;\n",
       " border: 2px solid #e0e0e0;\n",
       " background-color: #e0e0e0;\n",
       " background: #e0e0e0;\n",
       " background-image: none;\n",
       " box-shadow: none !important;\n",
       " border-radius: 3px;\n",
       "}\n",
       ".btn:active,\n",
       ".btn.active,\n",
       ".btn:active:focus,\n",
       ".btn.active:focus,\n",
       ".btn:active.focus,\n",
       ".btn.active.focus,\n",
       ".btn-default:focus,\n",
       ".btn-default.focus,\n",
       ".btn-default:active,\n",
       ".btn-default.active,\n",
       ".btn-default:active:hover,\n",
       ".btn-default.active:hover,\n",
       ".btn-default:active:focus,\n",
       ".btn-default.active:focus,\n",
       ".btn-default:active.focus,\n",
       ".btn-default.active.focus,\n",
       ".open > .dropdown-toggle.btn:focus,\n",
       ".open > .dropdown-toggle.btn.focus,\n",
       ".open > .dropdown-toggle.btn-default:hover,\n",
       ".open > .dropdown-toggle.btn-default:focus,\n",
       ".open > .dropdown-toggle.btn-default.hover,\n",
       ".open > .dropdown-toggle.btn-default.focus {\n",
       " color: #ef5c00;\n",
       " border: 2px solid #e0e0e0;\n",
       " background-color: #e0e0e0 !important;\n",
       " background: #e0e0e0 !important;\n",
       " background-image: none;\n",
       " box-shadow: none !important;\n",
       " border-radius: 3px;\n",
       "}\n",
       ".btn-default:active:hover,\n",
       ".btn-default.active:hover,\n",
       ".btn-default:active:focus,\n",
       ".btn-default.active:focus,\n",
       ".btn-default:active.focus,\n",
       ".btn-default.active.focus {\n",
       " color: #ef5c00 !important;\n",
       " background-color: #e5e5e5;\n",
       " border-color: #ffccac !important;\n",
       " transition: 2000ms ease;\n",
       "}\n",
       ".btn:focus,\n",
       ".btn.focus,\n",
       ".btn:active:focus,\n",
       ".btn.active:focus,\n",
       ".btn:active,\n",
       ".btn.active,\n",
       ".btn:active.focus,\n",
       ".btn.active.focus {\n",
       " color: #ef5c00 !important;\n",
       " outline: none !important;\n",
       " outline-width: 0px !important;\n",
       " background: #ffccac !important;\n",
       " background-color: #ffccac !important;\n",
       " border-color: #ffccac !important;\n",
       " transition: 200ms ease !important;\n",
       "}\n",
       ".item_buttons > .btn,\n",
       ".item_buttons > .btn-group,\n",
       ".item_buttons > .input-group {\n",
       " font-size: 13pt;\n",
       " background: transparent;\n",
       " background-color: transparent;\n",
       " border: 0px solid #e4e4e4;\n",
       " border-bottom: 2px solid transparent;\n",
       " margin-left: 5px;\n",
       " padding-top: 4px !important;\n",
       "}\n",
       ".item_buttons > .btn:hover,\n",
       ".item_buttons > .btn-group:hover,\n",
       ".item_buttons > .input-group:hover,\n",
       ".item_buttons > .btn.active,\n",
       ".item_buttons > .btn-group.active,\n",
       ".item_buttons > .input-group.active,\n",
       ".item_buttons > .btn.focus {\n",
       " margin-left: 5px;\n",
       " background: #dfdfdf;\n",
       " padding-top: 4px !important;\n",
       " background-color: transparent;\n",
       " border: 0px solid transparent;\n",
       " border-bottom: 2px solid #ff7823;\n",
       " border-radius: 0px;\n",
       " transition: none;\n",
       "}\n",
       ".item_buttons {\n",
       " line-height: 1.5em !important;\n",
       "}\n",
       ".item_buttons .btn {\n",
       " min-width: 11ex;\n",
       "}\n",
       ".btn-group > .btn:first-child {\n",
       " margin-left: 3px;\n",
       "}\n",
       ".btn-group > .btn-mini,\n",
       ".btn-sm,\n",
       ".btn-group-sm > .btn,\n",
       ".btn-xs,\n",
       ".btn-group-xs > .btn,\n",
       ".alternate_upload .btn-upload,\n",
       ".btn-group,\n",
       ".btn-group-vertical {\n",
       " font-size: inherit;\n",
       " font-weight: normal;\n",
       " height: inherit;\n",
       " line-height: inherit;\n",
       "}\n",
       ".btn-xs,\n",
       ".btn-group-xs > .btn {\n",
       " font-size: initial !important;\n",
       " background-image: none;\n",
       " font-weight: normal;\n",
       " text-shadow: none;\n",
       " display: inline-table;\n",
       " padding: 2px 5px;\n",
       " line-height: 1.45;\n",
       "}\n",
       ".btn-group > .btn:first-child {\n",
       " margin-left: 3px;\n",
       "}\n",
       "div#new-buttons > button,\n",
       "#new-buttons > button,\n",
       "div#refresh_notebook_list,\n",
       "#refresh_notebook_list {\n",
       " background: transparent;\n",
       " background-color: transparent;\n",
       " border: none;\n",
       "}\n",
       "div#new-buttons > button:hover,\n",
       "#new-buttons > button:hover,\n",
       "div#refresh_notebook_list,\n",
       "#refresh_notebook_list,\n",
       "div.alternate_upload .btn-upload,\n",
       ".alternate_upload .btn-upload,\n",
       "div.dynamic-buttons > button,\n",
       ".dynamic-buttons > button,\n",
       ".dynamic-buttons > button:focus,\n",
       ".dynamic-buttons > button:active:focus,\n",
       ".dynamic-buttons > button.active:focus,\n",
       ".dynamic-buttons > button.focus,\n",
       ".dynamic-buttons > button:active.focus,\n",
       ".dynamic-buttons > button.active.focus,\n",
       "#new-buttons > button:focus,\n",
       "#new-buttons > button:active:focus,\n",
       "#new-buttons > button.active:focus,\n",
       "#new-buttons > button.focus,\n",
       "#new-buttons > button:active.focus,\n",
       "#new-buttons > button.active.focus,\n",
       ".alternate_upload .btn-upload:focus,\n",
       ".alternate_upload .btn-upload:active:focus,\n",
       ".alternate_upload .btn-upload.active:focus,\n",
       ".alternate_upload .btn-upload.focus,\n",
       ".alternate_upload .btn-upload:active.focus,\n",
       ".alternate_upload .btn-upload.active.focus {\n",
       " background: transparent !important;\n",
       " background-color: transparent !important;\n",
       " border: none !important;\n",
       "}\n",
       ".alternate_upload input.fileinput {\n",
       " text-align: center;\n",
       " vertical-align: bottom;\n",
       " margin-left: -.5ex;\n",
       " display: inline-table;\n",
       " border: solid 0px #e5e5e5;\n",
       " margin-bottom: -1ex;\n",
       "}\n",
       ".alternate_upload .btn-upload {\n",
       " display: inline-table;\n",
       " background: transparent;\n",
       " border: none;\n",
       "}\n",
       ".btn-group .btn + .btn,\n",
       ".btn-group .btn + .btn-group,\n",
       ".btn-group .btn-group + .btn,\n",
       ".btn-group .btn-group + .btn-group {\n",
       " margin-left: -2px;\n",
       "}\n",
       ".btn-group > .btn:first-child:not(:last-child):not(.dropdown-toggle) {\n",
       " border-bottom-right-radius: 0;\n",
       " border-top-right-radius: 0;\n",
       " z-index: 2;\n",
       "}\n",
       ".dropdown-header {\n",
       " font-family: sans-serif !important;\n",
       " font-size: 13pt !important;\n",
       " color: #ff7823 !important;\n",
       " border-bottom: none !important;\n",
       " padding: 0px !important;\n",
       " margin: 6px 6px 0px !important;\n",
       "}\n",
       "span#last-modified.btn.btn-xs.btn-default.sort-action,\n",
       "span#sort-name.btn.btn-xs.btn-default.sort-action,\n",
       "span#file-size.btn.btn-xs.btn-default.sort-action {\n",
       " font-family: sans-serif;\n",
       " font-size: 16px;\n",
       " background-color: transparent;\n",
       " background: transparent;\n",
       " border: none;\n",
       " color: #303030;\n",
       " padding-bottom: 0px;\n",
       " margin-bottom: 0px;\n",
       " vertical-align: sub;\n",
       "}\n",
       "span#last-modified.btn.btn-xs.btn-default.sort-action {\n",
       " margin-left: 19px;\n",
       "}\n",
       "button.close {\n",
       " border: 0px none;\n",
       " font-family: sans-serif;\n",
       " font-size: 20pt;\n",
       " font-weight: normal;\n",
       "}\n",
       ".dynamic-buttons {\n",
       " padding-top: 0px;\n",
       " display: inline-block;\n",
       "}\n",
       ".close {\n",
       " color: #de143d;\n",
       " opacity: .5;\n",
       " text-shadow: none;\n",
       " font-weight: normal;\n",
       "}\n",
       ".close:hover {\n",
       " color: #de143d;\n",
       " opacity: 1;\n",
       " font-weight: normal;\n",
       "}\n",
       "div.nbext-enable-btns .btn[disabled],\n",
       "div.nbext-enable-btns .btn[disabled]:hover,\n",
       ".btn-default.disabled,\n",
       ".btn-default[disabled],\n",
       ".btn-default.disabled:hover,\n",
       ".btn-default[disabled]:hover,\n",
       "fieldset[disabled] .btn-default:hover,\n",
       ".btn-default.disabled:focus,\n",
       ".btn-default[disabled]:focus,\n",
       "fieldset[disabled] .btn-default:focus,\n",
       ".btn-default.disabled.focus,\n",
       ".btn-default[disabled].focus,\n",
       "fieldset[disabled] .btn-default.focus {\n",
       " color: #4a4a4a;\n",
       " background: #e2e2e2;\n",
       " background-color: #e2e2e2;\n",
       " border-color: #e2e2e2;\n",
       " transition: 200ms ease;\n",
       "}\n",
       ".input-group-addon {\n",
       " padding: 2px 5px;\n",
       " font-size: 13pt;\n",
       " font-weight: normal;\n",
       " height: auto;\n",
       " color: #303030;\n",
       " text-align: center;\n",
       " background-color: transparent;\n",
       " border: 2px solid transparent !important;\n",
       " text-transform: capitalize;\n",
       "}\n",
       "a.btn.btn-default.input-group-addon:hover {\n",
       " background: transparent !important;\n",
       " background-color: transparent !important;\n",
       "}\n",
       ".btn-group > .btn + .dropdown-toggle {\n",
       " padding-left: 8px;\n",
       " padding-right: 8px;\n",
       " height: 100%;\n",
       "}\n",
       ".btn-group > .btn + .dropdown-toggle:hover {\n",
       " background: #e0e0e0 !important;\n",
       "}\n",
       ".input-group-btn {\n",
       " position: relative;\n",
       " font-size: inherit;\n",
       " white-space: nowrap;\n",
       " background: #e4e4e4;\n",
       " background-color: #e4e4e4;\n",
       " border: none;\n",
       "}\n",
       ".input-group-btn:hover {\n",
       " background: #dfdfdf;\n",
       " background-color: #dfdfdf;\n",
       " border: none;\n",
       "}\n",
       ".input-group-btn:first-child > .btn,\n",
       ".input-group-btn:first-child > .btn-group {\n",
       " background: #e4e4e4;\n",
       " background-color: #e4e4e4;\n",
       " border: none;\n",
       " margin-left: 2px;\n",
       " margin-right: -1px;\n",
       " font-size: inherit;\n",
       "}\n",
       ".input-group-btn:first-child > .btn:hover,\n",
       ".input-group-btn:first-child > .btn-group:hover {\n",
       " background: #e0e0e0;\n",
       " background-color: #e0e0e0;\n",
       " border: none;\n",
       " font-size: inherit;\n",
       " transition: 200ms ease;\n",
       "}\n",
       "div.modal .btn-group > .btn:first-child {\n",
       " background: #e4e4e4;\n",
       " background-color: #e4e4e4;\n",
       " border: 1px solid #e1e1e1;\n",
       " margin-top: 0px !important;\n",
       " margin-left: 0px;\n",
       " margin-bottom: 2px;\n",
       "}\n",
       "div.modal .btn-group > .btn:first-child:hover {\n",
       " background: #dfdfdf;\n",
       " background-color: #dfdfdf;\n",
       " border: 1px solid #dfdfdf;\n",
       " transition: 200ms ease;\n",
       "}\n",
       "div.modal > button,\n",
       "div.modal-footer > button {\n",
       " background: #e4e4e4;\n",
       " background-color: #e4e4e4;\n",
       " border-color: #e4e4e4;\n",
       "}\n",
       "div.modal > button:hover,\n",
       "div.modal-footer > button:hover {\n",
       " background: #dfdfdf;\n",
       " background-color: #dfdfdf;\n",
       " border-color: #dfdfdf;\n",
       " transition: 200ms ease;\n",
       "}\n",
       ".modal-content {\n",
       " font-family: sans-serif;\n",
       " font-size: 12.0pt;\n",
       " position: relative;\n",
       " background: #e4e4e4;\n",
       " background-color: #e4e4e4;\n",
       " border: none;\n",
       " border-radius: 1px;\n",
       " background-clip: padding-box;\n",
       " outline: none;\n",
       "}\n",
       ".modal-header {\n",
       " font-family: sans-serif;\n",
       " font-size: 13pt;\n",
       " color: #303030;\n",
       " background: #e4e4e4;\n",
       " background-color: #e4e4e4;\n",
       " border-color: #dedede;\n",
       " padding: 12px;\n",
       " min-height: 16.4286px;\n",
       "}\n",
       ".modal-content h4 {\n",
       " font-family: sans-serif;\n",
       " font-size: 16pt;\n",
       " color: #303030;\n",
       " padding: 5px;\n",
       "}\n",
       ".modal-body {\n",
       " background-color: #ffffff;\n",
       " position: relative;\n",
       " padding: 15px;\n",
       "}\n",
       ".modal-footer {\n",
       " padding: 8px;\n",
       " text-align: right;\n",
       " background-color: #ffffff;\n",
       " border-top: none;\n",
       "}\n",
       ".alert-info {\n",
       " background-color: #fdfdfd;\n",
       " border-color: #dedede;\n",
       " color: #303030;\n",
       "}\n",
       ".modal-header .close {\n",
       " margin-top: -5px;\n",
       " font-size: 25pt;\n",
       "}\n",
       ".modal-backdrop,\n",
       ".modal-backdrop.in {\n",
       " opacity: 0.85;\n",
       " background-color: notebook-bg;\n",
       "}\n",
       "div.panel,\n",
       "div.panel-default,\n",
       ".panel,\n",
       ".panel-default {\n",
       " font-family: sans-serif;\n",
       " font-size: 13pt;\n",
       " background-color: #f4f4f4;\n",
       " color: #303030;\n",
       " margin-bottom: 14px;\n",
       " border: 0;\n",
       " box-shadow: none;\n",
       "}\n",
       "div.panel > .panel-heading,\n",
       "div.panel-default > .panel-heading {\n",
       " font-size: 14pt;\n",
       " color: #303030;\n",
       " background: #e4e4e4;\n",
       " background-color: #e4e4e4;\n",
       " border: 0;\n",
       "}\n",
       ".modal .modal-dialog {\n",
       " min-width: 950px;\n",
       " margin: 50px auto;\n",
       "}\n",
       "div.container-fluid {\n",
       " margin-right: auto;\n",
       " margin-left: auto;\n",
       " padding-left: 0px;\n",
       " padding-right: 5px;\n",
       "}\n",
       "div.form-control,\n",
       ".form-control {\n",
       " font-family: sans-serif;\n",
       " font-size: initial;\n",
       " color: #303030;\n",
       " background-color: #ffffff;\n",
       " border: 1px solid #d0d0d0 !important;\n",
       " margin-left: 2px;\n",
       " box-shadow: none;\n",
       " transition: border-color 0.15s ease-in-out 0s, box-shadow 0.15s ease-in-out 0s;\n",
       "}\n",
       ".form-control-static {\n",
       " min-height: inherit;\n",
       " height: inherit;\n",
       "}\n",
       ".form-group.list-group-item {\n",
       " color: #303030;\n",
       " background-color: #f4f4f4;\n",
       " border-color: #dedede;\n",
       " margin-bottom: 0px;\n",
       "}\n",
       ".form-group .input-group {\n",
       " float: left;\n",
       "}\n",
       "input,\n",
       "button,\n",
       "select,\n",
       "textarea {\n",
       " background-color: #ffffff;\n",
       " font-weight: normal;\n",
       " border: 1px solid #dedede;\n",
       "}\n",
       "select.form-control.select-xs {\n",
       " height: 33px;\n",
       " font-size: 13pt;\n",
       "}\n",
       ".toolbar select,\n",
       ".toolbar label {\n",
       " width: auto;\n",
       " vertical-align: middle;\n",
       " margin-right: 0px;\n",
       " margin-bottom: 0px;\n",
       " display: inline;\n",
       " font-size: 92%;\n",
       " margin-left: 10px;\n",
       " padding: 0px;\n",
       " background: #e5e5e5 !important;\n",
       " background-color: #e5e5e5 !important;\n",
       " border: 2px solid #e5e5e5 !important;\n",
       "}\n",
       ".form-control:focus {\n",
       " border-color: #ff7823;\n",
       " outline: 2px solid rgba(240,147,43,.50);\n",
       " -webkit-box-shadow: none;\n",
       "}\n",
       "::-webkit-input-placeholder {\n",
       " color: #828892;\n",
       "}\n",
       "::-moz-placeholder {\n",
       " color: #828892;\n",
       "}\n",
       ":-ms-input-placeholder {\n",
       " color: #828892;\n",
       "}\n",
       ":-moz-placeholder {\n",
       " color: #828892;\n",
       "}\n",
       "[dir=\"ltr\"] #find-and-replace .input-group-btn + .form-control {\n",
       " border: 2px solid #dedede !important;\n",
       "}\n",
       "[dir=\"ltr\"] #find-and-replace .input-group-btn + .form-control:focus {\n",
       " border-color: #ff7823;\n",
       " outline: 2px solid rgba(240,147,43,.50);\n",
       " -webkit-box-shadow: none;\n",
       " box-shadow: none;\n",
       "}\n",
       "div.output.output_scroll {\n",
       " box-shadow: none;\n",
       "}\n",
       "::-webkit-scrollbar {\n",
       " width: 11px;\n",
       " max-height: 9px;\n",
       " background-color: #ebebeb;\n",
       " border-radius: 3px;\n",
       " border: none;\n",
       "}\n",
       "::-webkit-scrollbar-track {\n",
       " background: #ebebeb;\n",
       " border: none;\n",
       " width: 11px;\n",
       " max-height: 9px;\n",
       "}\n",
       "::-webkit-scrollbar-thumb {\n",
       " border-radius: 2px;\n",
       " border: none;\n",
       " background: #909090;\n",
       " background-clip: content-box;\n",
       " width: 11px;\n",
       "}\n",
       "HTML,\n",
       "body,\n",
       "div,\n",
       "dl,\n",
       "dt,\n",
       "dd,\n",
       "ul,\n",
       "ol,\n",
       "li,\n",
       "h1,\n",
       "h2,\n",
       "h3,\n",
       "h4,\n",
       "h5,\n",
       "h6,\n",
       "pre,\n",
       "code,\n",
       "form,\n",
       "fieldset,\n",
       "legend,\n",
       "input,\n",
       "button,\n",
       "textarea,\n",
       "p,\n",
       "blockquote,\n",
       "th,\n",
       "td,\n",
       "span,\n",
       "a {\n",
       " text-rendering: geometricPrecision;\n",
       " -webkit-font-smoothing: subpixel-antialiased;\n",
       " font-weight: 400;\n",
       "}\n",
       "div.input_area {\n",
       " background-color: #ededed;\n",
       " background: #ededed;\n",
       " padding-right: 1.2em;\n",
       " border: 0px;\n",
       " border-radius: 0px;\n",
       " border-top-right-radius: 4px;\n",
       " border-bottom-right-radius: 4px;\n",
       "}\n",
       "div.cell {\n",
       " padding: 0px;\n",
       " background: #ededed;\n",
       " background-color: #ededed;\n",
       " border: medium solid #ffffff;\n",
       " border-radius: 4px;\n",
       " top: 0;\n",
       "}\n",
       "div.cell.selected {\n",
       " background: #ededed;\n",
       " background-color: #ededed;\n",
       " border: medium solid #ffffff;\n",
       " padding: 0px;\n",
       " border-radius: 5px;\n",
       "}\n",
       ".edit_mode div.cell.selected {\n",
       " padding: 0px;\n",
       " background: #ededed;\n",
       " background-color: #ededed;\n",
       " border: medium solid #ffffff;\n",
       " border-radius: 5px;\n",
       "}\n",
       "div.cell.edit_mode {\n",
       " padding: 0px;\n",
       " background: #ededed;\n",
       " background-color: #ededed;\n",
       "}\n",
       "div.CodeMirror-sizer {\n",
       " margin-left: 0px;\n",
       " margin-bottom: -21px;\n",
       " border-right-width: 16px;\n",
       " min-height: 37px;\n",
       " padding-right: 0px;\n",
       " padding-bottom: 0px;\n",
       " margin-top: 0px;\n",
       "}\n",
       "div.cell.selected:before,\n",
       ".edit_mode div.cell.selected:before,\n",
       "div.cell.selected:before,\n",
       "div.cell.selected.jupyter-soft-selected:before {\n",
       " background: #ededed !important;\n",
       " border: none;\n",
       " border-radius: 3px;\n",
       " position: absolute;\n",
       " display: block;\n",
       " top: 0px;\n",
       " left: 0px;\n",
       " width: 0px;\n",
       " height: 100%;\n",
       "}\n",
       "div.cell.text_cell.selected::before,\n",
       ".edit_mode div.cell.text_cell.selected:before,\n",
       "div.cell.text_cell.selected:before,\n",
       "div.cell.text_cell.selected.jupyter-soft-selected:before {\n",
       " background: #ffffff !important;\n",
       " background-color: #ffffff !important;\n",
       " border-color: #f2f2f2 !important;\n",
       "}\n",
       "div.cell.code_cell .input {\n",
       " border-left: 5px solid #ededed !important;\n",
       " border-radius: 3px;\n",
       " border-bottom-left-radius: 3px;\n",
       " border-top-left-radius: 3px;\n",
       "}\n",
       "div.cell.code_cell.selected .input {\n",
       " border-left: 5px solid #ff7823 !important;\n",
       " border-radius: 3px;\n",
       "}\n",
       ".edit_mode div.cell.code_cell.selected .input {\n",
       " border-left: 5px solid #ffd5bb !important;\n",
       " border-radius: 3px;\n",
       "}\n",
       ".edit_mode div.cell.selected:before {\n",
       " height: 100%;\n",
       " border-left: 5px solid #ffd5bb !important;\n",
       " border-radius: 3px;\n",
       "}\n",
       "div.cell.jupyter-soft-selected,\n",
       "div.cell.selected.jupyter-soft-selected {\n",
       " border-left-color: #ffd5bb !important;\n",
       " border-left-width: 0px !important;\n",
       " padding-left: 7px !important;\n",
       " border-right-color: #ffd5bb !important;\n",
       " border-right-width: 0px !important;\n",
       " background: #ffd5bb !important;\n",
       " border-radius: 6px !important;\n",
       "}\n",
       "div.cell.selected.jupyter-soft-selected .input {\n",
       " border-left: 5px solid #ededed !important;\n",
       "}\n",
       "div.cell.selected.jupyter-soft-selected {\n",
       " border-left-color: #ff7823;\n",
       " border-color: #ffffff;\n",
       " padding-left: 7px;\n",
       " border-radius: 6px;\n",
       "}\n",
       "div.cell.code_cell.selected .input {\n",
       " border-left: none;\n",
       " border-radius: 3px;\n",
       "}\n",
       "div.cell.selected.jupyter-soft-selected .prompt,\n",
       "div.cell.text_cell.selected.jupyter-soft-selected .prompt {\n",
       " top: 0;\n",
       " border-left: #ededed !important;\n",
       " border-radius: 2px;\n",
       "}\n",
       "div.cell.text_cell.selected.jupyter-soft-selected .input_prompt {\n",
       " border-left: none !important;\n",
       "}\n",
       "div.cell.text_cell.jupyter-soft-selected,\n",
       "div.cell.text_cell.selected.jupyter-soft-selected {\n",
       " border-left-color: #f2f2f2 !important;\n",
       " border-left-width: 0px !important;\n",
       " padding-left: 26px !important;\n",
       " border-right-color: #f2f2f2 !important;\n",
       " border-right-width: 0px !important;\n",
       " background: #f2f2f2 !important;\n",
       " border-radius: 5px !important;\n",
       "}\n",
       "div.cell.jupyter-soft-selected .input,\n",
       "div.cell.selected.jupyter-soft-selected .input {\n",
       " border-left-color: #ffd5bb !important;\n",
       "}\n",
       "div.prompt,\n",
       ".prompt {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 9pt !important;\n",
       " font-weight: normal;\n",
       " color: #828892;\n",
       " line-height: 170%;\n",
       " padding: 0px;\n",
       " padding-top: 4px;\n",
       " padding-left: 0px;\n",
       " padding-right: 1px;\n",
       " text-align: right !important;\n",
       " min-width: 11.5ex !important;\n",
       " width: 11.5ex !important;\n",
       "}\n",
       "div.prompt.input_prompt {\n",
       " font-size: 9pt !important;\n",
       " background-color: #ededed;\n",
       " border-top: 0px;\n",
       " border-top-right-radius: 0px;\n",
       " border-bottom-left-radius: 0px;\n",
       " border-bottom-right-radius: 0px;\n",
       " padding-right: 3px;\n",
       " min-width: 11.5ex;\n",
       " width: 11.5ex !important;\n",
       "}\n",
       "div.cell.code_cell .input_prompt {\n",
       " border-right: 2px solid rgba(240,147,43,.50);\n",
       "}\n",
       "div.cell.selected .prompt {\n",
       " top: 0;\n",
       "}\n",
       ".edit_mode div.cell.selected .prompt {\n",
       " top: 0;\n",
       "}\n",
       ".edit_mode div.cell.selected .prompt {\n",
       " top: 0;\n",
       "}\n",
       ".run_this_cell {\n",
       " visibility: hidden;\n",
       " color: transparent;\n",
       " padding-top: 0px;\n",
       " padding-bottom: 0px;\n",
       " padding-left: 3px;\n",
       " padding-right: 12px;\n",
       " width: 1.5ex;\n",
       " width: 0ex;\n",
       " background: transparent;\n",
       " background-color: transparent;\n",
       "}\n",
       "div.code_cell:hover div.input .run_this_cell {\n",
       " visibility: visible;\n",
       "}\n",
       "div.cell.code_cell.rendered.selected .run_this_cell:hover {\n",
       " background-color: #e3e3e3;\n",
       " background: #e3e3e3;\n",
       " color: #ff7823 !important;\n",
       "}\n",
       "div.cell.code_cell.rendered.unselected .run_this_cell:hover {\n",
       " background-color: #e3e3e3;\n",
       " background: #e3e3e3;\n",
       " color: #ff7823 !important;\n",
       "}\n",
       "i.fa-step-forward.fa {\n",
       " display: inline-block;\n",
       " font: normal normal normal 9px \"FontAwesome\";\n",
       "}\n",
       ".fa-step-forward:before {\n",
       " content: \"\\f04b\";\n",
       "}\n",
       "div.cell.selected.jupyter-soft-selected .run_this_cell,\n",
       "div.cell.selected.jupyter-soft-selected .run_this_cell:hover,\n",
       "div.cell.unselected.jupyter-soft-selected .run_this_cell:hover,\n",
       "div.cell.code_cell.rendered.selected.jupyter-soft-selected .run_this_cell:hover,\n",
       "div.cell.code_cell.rendered.unselected.jupyter-soft-selected .run_this_cell:hover {\n",
       " background-color: #ffd5bb !important;\n",
       " background: #ffd5bb !important;\n",
       " color: #ffd5bb !important;\n",
       "}\n",
       "div.output_wrapper {\n",
       " background-color: #ffffff;\n",
       " border: 0px;\n",
       " left: 0px;\n",
       " margin-bottom: 0em;\n",
       " margin-top: 0em;\n",
       " border-top-right-radius: 0px;\n",
       " border-top-left-radius: 0px;\n",
       "}\n",
       "div.output_subarea.output_text.output_stream.output_stdout,\n",
       "div.output_subarea.output_text {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 8.5pt !important;\n",
       " line-height: 150% !important;\n",
       " background-color: #ffffff;\n",
       " color: #303030;\n",
       " border-top-right-radius: 0px;\n",
       " border-top-left-radius: 0px;\n",
       " margin-left: 11.5px;\n",
       "}\n",
       "div.output_area pre {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 8.5pt !important;\n",
       " line-height: 151% !important;\n",
       " color: #303030;\n",
       " border-top-right-radius: 0px;\n",
       " border-top-left-radius: 0px;\n",
       "}\n",
       "div.output_area {\n",
       " display: -webkit-box;\n",
       "}\n",
       "div.output_html {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 8.5pt;\n",
       " color: #353535;\n",
       " background-color: #ffffff;\n",
       " background: #ffffff;\n",
       "}\n",
       "div.output_subarea {\n",
       " overflow-x: auto;\n",
       " padding: 1.2em !important;\n",
       " -webkit-box-flex: 1;\n",
       " -moz-box-flex: 1;\n",
       " box-flex: 1;\n",
       " flex: 1;\n",
       "}\n",
       "div.btn.btn-default.output_collapsed {\n",
       " background: #d7d7d7;\n",
       " background-color: #d7d7d7;\n",
       " border-color: #d7d7d7;\n",
       "}\n",
       "div.btn.btn-default.output_collapsed:hover {\n",
       " background: #d2d2d2;\n",
       " background-color: #d2d2d2;\n",
       " border-color: #d2d2d2;\n",
       "}\n",
       "div.prompt.output_prompt {\n",
       " font-family: monospace, monospace;\n",
       " font-weight: bold !important;\n",
       " background-color: #ffffff;\n",
       " color: transparent;\n",
       " border-bottom-left-radius: 4px;\n",
       " border-top-right-radius: 0px;\n",
       " border-top-left-radius: 0px;\n",
       " border-bottom-right-radius: 0px;\n",
       " min-width: 11.5ex !important;\n",
       " width: 11.5ex !important;\n",
       " border-right: 2px solid transparent;\n",
       "}\n",
       "div.out_prompt_overlay.prompt {\n",
       " font-family: monospace, monospace;\n",
       " font-weight: bold !important;\n",
       " background-color: #ffffff;\n",
       " border-bottom-left-radius: 2px;\n",
       " border-top-right-radius: 0px;\n",
       " border-top-left-radius: 0px;\n",
       " border-bottom-right-radius: 0px;\n",
       " min-width: 11.5ex !important;\n",
       " width: 11.5ex !important;\n",
       " border-right: 2px solid transparent;\n",
       " color: transparent;\n",
       "}\n",
       "div.out_prompt_overlay.prompt:hover {\n",
       " background-color: #f7f7f7;\n",
       " box-shadow: none !important;\n",
       " border: none;\n",
       " border-bottom-left-radius: 2px;\n",
       " -webkit-border-: 2px;\n",
       " -moz-border-radius: 2px;\n",
       " border-top-right-radius: 0px;\n",
       " border-top-left-radius: 0px;\n",
       " min-width: 11.5ex !important;\n",
       " width: 11.5ex !important;\n",
       " border-right: 2px solid #f7f7f7 !important;\n",
       "}\n",
       "div.cell.code_cell .output_prompt {\n",
       " border-right: 2px solid transparent;\n",
       " color: transparent;\n",
       "}\n",
       "div.cell.selected .output_prompt,\n",
       "div.cell.selected .out_prompt_overlay.prompt {\n",
       " border-left: 5px solid #f2f2f2;\n",
       " border-right: 2px solid #ffffff;\n",
       " border-radius: 0px !important;\n",
       "}\n",
       ".edit_mode div.cell.selected .output_prompt,\n",
       ".edit_mode div.cell.selected .out_prompt_overlay.prompt {\n",
       " border-left: 5px solid #f2f2f2;\n",
       " border-right: 2px solid #ffffff;\n",
       " border-radius: 0px !important;\n",
       "}\n",
       "div.text_cell,\n",
       "div.text_cell_render pre,\n",
       "div.text_cell_render {\n",
       " font-family: sans-serif;\n",
       " font-size: 13pt;\n",
       " line-height: 130% !important;\n",
       " color: #353535;\n",
       " background: #ffffff;\n",
       " background-color: #ffffff;\n",
       " border-radius: 0px;\n",
       "}\n",
       "div .text_cell_render {\n",
       " padding: 0.4em 0.4em 0.4em 0.4em;\n",
       "}\n",
       "div.cell.text_cell .CodeMirror-lines {\n",
       " padding-top: .7em !important;\n",
       " padding-bottom: .4em !important;\n",
       " padding-left: .5em !important;\n",
       " padding-right: .5em !important;\n",
       " margin-top: .4em;\n",
       " margin-bottom: .3em;\n",
       "}\n",
       "div.cell.text_cell.unrendered div.input_area,\n",
       "div.cell.text_cell.rendered div.input_area {\n",
       " background-color: #ffffff;\n",
       " background: #ffffff;\n",
       " border: 0px;\n",
       " border-radius: 2px;\n",
       "}\n",
       "div.cell.text_cell .CodeMirror,\n",
       "div.cell.text_cell .CodeMirror pre {\n",
       " line-height: 170% !important;\n",
       "}\n",
       "div.cell.text_cell.rendered.selected {\n",
       " font-family: sans-serif;\n",
       " line-height: 170% !important;\n",
       " background: #ffffff;\n",
       " background-color: #ffffff;\n",
       " border-radius: 0px;\n",
       "}\n",
       "div.cell.text_cell.unrendered.selected {\n",
       " font-family: sans-serif;\n",
       " line-height: 170% !important;\n",
       " background: #ffffff;\n",
       " background-color: #ffffff;\n",
       " border-radius: 0px;\n",
       "}\n",
       "div.cell.text_cell.selected {\n",
       " font-family: sans-serif;\n",
       " line-height: 170% !important;\n",
       " background: #ffffff;\n",
       " background-color: #ffffff;\n",
       " border-radius: 0px;\n",
       "}\n",
       ".edit_mode div.cell.text_cell.selected {\n",
       " font-family: sans-serif;\n",
       " line-height: 170% !important;\n",
       " background: #ffffff;\n",
       " background-color: #ffffff;\n",
       " border-radius: 0px;\n",
       "}\n",
       "div.text_cell.unrendered,\n",
       "div.text_cell.unrendered.selected,\n",
       "div.edit_mode div.text_cell.unrendered {\n",
       " font-family: sans-serif;\n",
       " line-height: 170% !important;\n",
       " background: #ffffff;\n",
       " background-color: #ffffff;\n",
       " border-radius: 0px;\n",
       "}\n",
       "div.cell.text_cell .prompt {\n",
       " border-right: 0;\n",
       " min-width: 11.5ex !important;\n",
       " width: 11.5ex !important;\n",
       "}\n",
       "div.cell.text_cell.rendered .prompt {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 9.5pt !important;\n",
       " font-weight: normal;\n",
       " color: #828892 !important;\n",
       " text-align: right !important;\n",
       " min-width: 14.5ex !important;\n",
       " width: 14.5ex !important;\n",
       " background-color: #ffffff;\n",
       " border-right: 2px solid transparent;\n",
       " border-left: 4px solid #ffffff;\n",
       "}\n",
       "div.cell.text_cell.unrendered .prompt {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 9.5pt !important;\n",
       " font-weight: normal;\n",
       " color: #828892 !important;\n",
       " text-align: right !important;\n",
       " min-width: 14.5ex !important;\n",
       " width: 14.5ex !important;\n",
       " border-right: 2px solid transparent;\n",
       " border-left: 4px solid #ffffff;\n",
       " background-color: #ffffff;\n",
       "}\n",
       "div.cell.text_cell.rendered .prompt {\n",
       " border-right: 2px solid transparent;\n",
       "}\n",
       "div.cell.text_cell.rendered.selected .prompt {\n",
       " top: 0;\n",
       " border-left: 4px solid #f2f2f2;\n",
       " border-right: 2px solid transparent;\n",
       "}\n",
       "div.text_cell.unrendered.selected .prompt,\n",
       "div.text_cell.rendered.selected .prompt {\n",
       " top: 0;\n",
       " background: #ffffff;\n",
       " border-left: 4px solid #f2f2f2;\n",
       " border-right: 2px solid transparent;\n",
       "}\n",
       "div.rendered_html code {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 11pt;\n",
       " padding-top: 3px;\n",
       " padding-left: 2px;\n",
       " color: #303030;\n",
       " background: #efefef;\n",
       " background-color: #efefef;\n",
       "}\n",
       "pre,\n",
       "code,\n",
       "kbd,\n",
       "samp {\n",
       " white-space: pre-wrap;\n",
       "}\n",
       ".well code,\n",
       "code {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 11pt !important;\n",
       " line-height: 170% !important;\n",
       " color: #353535;\n",
       " background: #efefef;\n",
       " background-color: #efefef;\n",
       " border-color: #efefef;\n",
       "}\n",
       "kbd {\n",
       " padding: 1px;\n",
       " font-size: 11pt;\n",
       " font-weight: 800;\n",
       " color: #303030;\n",
       " background-color: transparent !important;\n",
       " border: 0;\n",
       " box-shadow: none;\n",
       "}\n",
       "pre {\n",
       " display: block;\n",
       " padding: 8.5px;\n",
       " margin: 0 0 9px;\n",
       " font-size: 12.0pt;\n",
       " line-height: 1.42857143;\n",
       " color: #303030;\n",
       " background-color: #efefef;\n",
       " border: 1px solid #e7e7e7;\n",
       " border-radius: 2px;\n",
       "}\n",
       "div.rendered_html {\n",
       " color: #353535;\n",
       "}\n",
       ".rendered_html * + ul {\n",
       " margin-top: .4em;\n",
       " margin-bottom: .3em;\n",
       "}\n",
       ".rendered_html * + p {\n",
       " margin-top: .5em;\n",
       " margin-bottom: .5em;\n",
       "}\n",
       "div.rendered_html pre {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 11pt !important;\n",
       " line-height: 170% !important;\n",
       " color: #353535 !important;\n",
       " background: #efefef;\n",
       " background-color: #efefef;\n",
       " max-width: 80%;\n",
       " border-radius: 0px;\n",
       " border-left: 3px solid #efefef;\n",
       " max-width: 80%;\n",
       " border-radius: 0px;\n",
       " padding-left: 5px;\n",
       " margin-left: 6px;\n",
       "}\n",
       "div.text_cell_render pre,\n",
       "div.text_cell_render code {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 11pt !important;\n",
       " line-height: 170% !important;\n",
       " color: #353535;\n",
       " background: #ffffff;\n",
       " background-color: #ffffff;\n",
       " max-width: 80%;\n",
       " border-radius: 0px;\n",
       " border-left: none;\n",
       "}\n",
       "div.text_cell_render pre {\n",
       " border-left: 3px solid rgba(240,147,43,.50) !important;\n",
       " max-width: 80%;\n",
       " border-radius: 0px;\n",
       " padding-left: 5px;\n",
       " margin-left: 6px;\n",
       "}\n",
       "div.text_cell_render h1,\n",
       "div.rendered_html h1,\n",
       "div.text_cell_render h2,\n",
       "div.rendered_html h2,\n",
       "div.text_cell_render h3,\n",
       "div.rendered_html h3,\n",
       "div.text_cell_render h4,\n",
       "div.rendered_html h4,\n",
       "div.text_cell_render h5,\n",
       "div.rendered_html h5 {\n",
       " font-family: sans-serif;\n",
       " margin: 0.4em .2em .3em .2em !important;\n",
       "}\n",
       ".rendered_html h1:first-child,\n",
       ".rendered_html h2:first-child,\n",
       ".rendered_html h3:first-child,\n",
       ".rendered_html h4:first-child,\n",
       ".rendered_html h5:first-child,\n",
       ".rendered_html h6:first-child {\n",
       " margin-top: 0.2em !important;\n",
       " margin-bottom: 0.2em !important;\n",
       "}\n",
       ".rendered_html h1,\n",
       ".text_cell_render h1 {\n",
       " color: #126dce !important;\n",
       " font-size: 200%;\n",
       " text-align: left;\n",
       " font-style: normal;\n",
       " font-weight: normal;\n",
       "}\n",
       ".rendered_html h2,\n",
       ".text_cell_render h2 {\n",
       " color: #126dce !important;\n",
       " font-size: 170%;\n",
       " font-style: normal;\n",
       " font-weight: normal;\n",
       "}\n",
       ".rendered_html h3,\n",
       ".text_cell_render h3 {\n",
       " color: #126dce !important;\n",
       " font-size: 140%;\n",
       " font-style: normal;\n",
       " font-weight: normal;\n",
       "}\n",
       ".rendered_html h4,\n",
       ".text_cell_render h4 {\n",
       " color: #126dce !important;\n",
       " font-size: 110%;\n",
       " font-style: normal;\n",
       " font-weight: normal;\n",
       "}\n",
       ".rendered_html h5,\n",
       ".text_cell_render h5 {\n",
       " color: #126dce !important;\n",
       " font-size: 100%;\n",
       " font-style: normal;\n",
       " font-weight: normal;\n",
       "}\n",
       "hr {\n",
       " margin-top: 8px;\n",
       " margin-bottom: 10px;\n",
       " border: 0;\n",
       " border-top: 1px solid #126dce;\n",
       "}\n",
       ".rendered_html hr {\n",
       " color: #126dce;\n",
       " background-color: #126dce;\n",
       " margin-right: 2em;\n",
       "}\n",
       "#complete > select > option:hover {\n",
       " background: #d4d4d4;\n",
       " background-color: #d4d4d4;\n",
       "}\n",
       "div#_vivaldi-spatnav-focus-indicator._vivaldi-spatnav-focus-indicator {\n",
       " position: absolute;\n",
       " z-index: 9999999999;\n",
       " top: 0px;\n",
       " left: 0px;\n",
       " box-shadow: none;\n",
       " pointer-events: none;\n",
       " border-radius: 2px;\n",
       "}\n",
       ".rendered_html tr,\n",
       ".rendered_html th,\n",
       ".rendered_html td {\n",
       " text-align: left;\n",
       " vertical-align: middle;\n",
       " padding: 0.42em 0.47em;\n",
       " line-height: normal;\n",
       " white-space: normal;\n",
       " max-width: none;\n",
       " border: none;\n",
       "}\n",
       ".rendered_html td {\n",
       " font-family: sans-serif !important;\n",
       " font-size: 9.3pt;\n",
       "}\n",
       ".rendered_html table {\n",
       " font-family: sans-serif !important;\n",
       " margin-left: 8px;\n",
       " margin-right: auto;\n",
       " border: none;\n",
       " border-collapse: collapse;\n",
       " border-spacing: 0;\n",
       " color: #353535;\n",
       " table-layout: fixed;\n",
       "}\n",
       ".rendered_html thead {\n",
       " font-family: sans-serif !important;\n",
       " font-size: 10.3pt !important;\n",
       " background: #ebebeb;\n",
       " color: #353535;\n",
       " border-bottom: 1px solid #ebebeb;\n",
       " vertical-align: bottom;\n",
       "}\n",
       ".rendered_html tbody tr:nth-child(odd) {\n",
       " background: #fafafa;\n",
       "}\n",
       ".rendered_html tbody tr {\n",
       " background: #f2f2f2;\n",
       "}\n",
       ".rendered_html tbody tr:hover:nth-child(odd) {\n",
       " background: #f7f7f7;\n",
       "}\n",
       ".rendered_html tbody tr:hover {\n",
       " background: #f0f0f0;\n",
       "}\n",
       ".rendered_html * + table {\n",
       " margin-top: .05em;\n",
       "}\n",
       "div.widget-area {\n",
       " background-color: #ffffff;\n",
       " background: #ffffff;\n",
       " color: #303030;\n",
       "}\n",
       "div.widget-area a {\n",
       " font-family: sans-serif;\n",
       " font-size: 12.0pt;\n",
       " font-weight: normal;\n",
       " font-style: normal;\n",
       " color: #303030;\n",
       " text-shadow: none !important;\n",
       "}\n",
       "div.widget-area a:hover,\n",
       "div.widget-area a:focus {\n",
       " font-family: sans-serif;\n",
       " font-size: 12.0pt;\n",
       " font-weight: normal;\n",
       " font-style: normal;\n",
       " color: #2f2f2f;\n",
       " background: rgba(180,180,180,.14);\n",
       " background-color: rgba(180,180,180,.14);\n",
       " border-color: transparent;\n",
       " background-image: none;\n",
       " text-shadow: none !important;\n",
       "}\n",
       "div.widget_item.btn-group > button.btn.btn-default.widget-combo-btn,\n",
       "div.widget_item.btn-group > button.btn.btn-default.widget-combo-btn:hover {\n",
       " background: #e1e1e1;\n",
       " background-color: #e1e1e1;\n",
       " border: 2px solid #e1e1e1 !important;\n",
       " font-size: inherit;\n",
       " z-index: 0;\n",
       "}\n",
       "div.jupyter-widgets.widget-hprogress.widget-hbox {\n",
       " display: inline-table !important;\n",
       " width: 38% !important;\n",
       " margin-left: 10px;\n",
       "}\n",
       "div.jupyter-widgets.widget-hprogress.widget-hbox .widget-label,\n",
       "div.widget-hbox .widget-label,\n",
       ".widget-hbox .widget-label,\n",
       ".widget-inline-hbox .widget-label,\n",
       "div.widget-label {\n",
       " text-align: -webkit-auto !important;\n",
       " margin-left: 15px !important;\n",
       " max-width: 240px !important;\n",
       " min-width: 100px !important;\n",
       " vertical-align: text-top !important;\n",
       " color: #303030 !important;\n",
       " font-size: 14px !important;\n",
       "}\n",
       ".widget-hprogress .progress {\n",
       " flex-grow: 1;\n",
       " height: 20px;\n",
       " margin-top: auto;\n",
       " margin-left: 12px;\n",
       " margin-bottom: auto;\n",
       " width: 300px;\n",
       "}\n",
       ".progress {\n",
       " overflow: hidden;\n",
       " height: 22px;\n",
       " margin-bottom: 10px;\n",
       " padding-left: 10px;\n",
       " background-color: #d6d6d6 !important;\n",
       " border-radius: 2px;\n",
       " -webkit-box-shadow: none;\n",
       " box-shadow: none;\n",
       " z-index: 10;\n",
       "}\n",
       ".progress-bar-danger {\n",
       " background-color: #e5344a !important;\n",
       "}\n",
       ".progress-bar-info {\n",
       " background-color: #2980b9 !important;\n",
       "}\n",
       ".progress-bar-warning {\n",
       " background-color: #f39c12 !important;\n",
       "}\n",
       ".progress-bar-success {\n",
       " background-color: #5cb85c !important;\n",
       "}\n",
       ".widget-select select {\n",
       " margin-left: 12px;\n",
       "}\n",
       ".rendered_html :link {\n",
       " font-family: sans-serif;\n",
       " font-size: 100%;\n",
       " color: #ff7823;\n",
       " text-decoration: underline;\n",
       "}\n",
       ".rendered_html :visited,\n",
       ".rendered_html :visited:active,\n",
       ".rendered_html :visited:focus {\n",
       " color: #fa853d;\n",
       "}\n",
       ".rendered_html :visited:hover,\n",
       ".rendered_html :link:hover {\n",
       " font-family: sans-serif;\n",
       " font-size: 100%;\n",
       " color: #f96000;\n",
       "}\n",
       "div.cell.text_cell a.anchor-link:link {\n",
       " font-size: inherit;\n",
       " text-decoration: none;\n",
       " padding: 0px 20px;\n",
       " visibility: none;\n",
       " color: rgba(0,0,0,.32);\n",
       "}\n",
       "div.cell.text_cell a.anchor-link:link:hover {\n",
       " font-size: inherit;\n",
       " color: #de6d25;\n",
       "}\n",
       ".navbar-text {\n",
       " margin-top: 4px;\n",
       " margin-bottom: 0px;\n",
       "}\n",
       "#clusters > a {\n",
       " color: #ef5c00;\n",
       " text-decoration: underline;\n",
       " cursor: auto;\n",
       "}\n",
       "#clusters > a:hover {\n",
       " color: #126dce;\n",
       " text-decoration: underline;\n",
       " cursor: auto;\n",
       "}\n",
       "#nbextensions-configurator-container > div.row.container-fluid.nbext-selector > h3 {\n",
       " font-size: 17px;\n",
       " margin-top: 5px;\n",
       " margin-bottom: 8px;\n",
       " height: 24px;\n",
       " padding: 4px 0 4px 0;\n",
       "}\n",
       "div#nbextensions-configurator-container.container,\n",
       "#nbextensions-configurator-container.container {\n",
       " width: 100%;\n",
       " margin-right: auto;\n",
       " margin-left: auto;\n",
       "}\n",
       "div.nbext-selector > nav > .nav > li > a {\n",
       " font-family: sans-serif;\n",
       " font-size: 10.5pt;\n",
       " padding: 2px 5px;\n",
       "}\n",
       "div.nbext-selector > nav > .nav > li > a:hover {\n",
       " background: transparent;\n",
       "}\n",
       "div.nbext-selector > nav > .nav > li:hover {\n",
       " background-color: rgba(180,180,180,.14) !important;\n",
       " background: rgba(180,180,180,.14) !important;\n",
       "}\n",
       "div.nbext-selector > nav > .nav > li.active:hover {\n",
       " background: transparent !important;\n",
       " background-color: transparent !important;\n",
       "}\n",
       ".nav-pills > li.active > a,\n",
       ".nav-pills > li.active > a:active,\n",
       ".nav-pills > li.active > a:hover,\n",
       ".nav-pills > li.active > a:focus {\n",
       " color: #1c1c1c;\n",
       " background-color: rgba(180,180,180,.14) !important;\n",
       " background: rgba(180,180,180,.14) !important;\n",
       " -webkit-backface-visibility: hidden;\n",
       " -webkit-font-smoothing: subpixel-antialiased !important;\n",
       "}\n",
       "div.nbext-readme > .nbext-readme-contents > .rendered_html {\n",
       " font-family: sans-serif;\n",
       " font-size: 11.5pt;\n",
       " line-height: 145%;\n",
       " padding: 1em 1em;\n",
       " color: #353535;\n",
       " background-color: #ffffff;\n",
       " -webkit-box-shadow: none;\n",
       " -moz-box-shadow: none;\n",
       " box-shadow: none;\n",
       "}\n",
       ".nbext-icon,\n",
       ".nbext-desc,\n",
       ".nbext-compat-div,\n",
       ".nbext-enable-btns,\n",
       ".nbext-params {\n",
       " margin-bottom: 8px;\n",
       " font-size: 11.5pt;\n",
       "}\n",
       "div.nbext-readme > .nbext-readme-contents {\n",
       " padding: 0;\n",
       " overflow-y: hidden;\n",
       "}\n",
       "div.nbext-readme > .nbext-readme-contents:not(:empty) {\n",
       " margin-top: 0.5em;\n",
       " margin-bottom: 2em;\n",
       " border: none;\n",
       " border-top-color: #828892;\n",
       "}\n",
       ".nbext-showhide-incompat {\n",
       " padding-bottom: 0.5em;\n",
       " color: #4a4a4a;\n",
       " font-size: 10.5pt;\n",
       "}\n",
       ".nbext-filter-menu.dropdown-menu > li > a:hover,\n",
       ".nbext-filter-menu.dropdown-menu > li > a:focus,\n",
       ".nbext-filter-menu.dropdown-menu > li > a.ui-state-focus {\n",
       " color: #2f2f2f !important;\n",
       " background-color: #d4d4d4 !important;\n",
       " background: #d4d4d4 !important;\n",
       " border-color: #d4d4d4 !important;\n",
       "}\n",
       ".nbext-filter-input-wrap > .nbext-filter-input-subwrap,\n",
       ".nbext-filter-input-wrap > .nbext-filter-input-subwrap > input {\n",
       " border: none;\n",
       " outline: none;\n",
       " background-color: transparent;\n",
       " padding: 0;\n",
       " vertical-align: middle;\n",
       " margin-top: -2px;\n",
       "}\n",
       "span.rendered_html code {\n",
       " background-color: transparent;\n",
       " color: #303030;\n",
       "}\n",
       "#nbextensions-configurator-container > div.row.container-fluid.nbext-selector {\n",
       " padding-left: 0px;\n",
       " padding-right: 0px;\n",
       "}\n",
       ".nbext-filter-menu {\n",
       " max-height: 55vh !important;\n",
       " overflow-y: auto;\n",
       " outline: none;\n",
       " border: none;\n",
       "}\n",
       ".nbext-filter-menu:hover {\n",
       " border: none;\n",
       "}\n",
       ".alert-warning {\n",
       " background-color: #f4f4f4;\n",
       " border-color: #f4f4f4;\n",
       " color: #303030;\n",
       "}\n",
       ".notification_widget.danger {\n",
       " color: #ffffff;\n",
       " background-color: #e5344a;\n",
       " border-color: #e5344a;\n",
       " padding-right: 5px;\n",
       "}\n",
       "#nbextensions-configurator-container > div.nbext-buttons.tree-buttons.no-padding.pull-right > span > button {\n",
       " border: none !important;\n",
       "}\n",
       "button#refresh_running_list {\n",
       " border: none !important;\n",
       "}\n",
       "mark,\n",
       ".mark {\n",
       " background-color: #ffffff;\n",
       " color: #353535;\n",
       " padding: .15em;\n",
       "}\n",
       "a.text-warning,\n",
       "a.text-warning:hover {\n",
       " color: #828892;\n",
       "}\n",
       "a.text-warning.bg-warning {\n",
       " background-color: #ffffff;\n",
       "}\n",
       "span.bg-success.text-success {\n",
       " background-color: transparent;\n",
       " color: #009e07;\n",
       "}\n",
       "span.bg-danger.text-danger {\n",
       " background-color: #ffffff;\n",
       " color: #de143d;\n",
       "}\n",
       ".has-success .input-group-addon {\n",
       " color: #009e07;\n",
       " border-color: transparent;\n",
       " background: inherit;\n",
       " background-color: rgba(83,180,115,.10);\n",
       "}\n",
       ".has-success .form-control {\n",
       " border-color: #009e07;\n",
       " -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,0.025);\n",
       " box-shadow: inset 0 1px 1px rgba(0,0,0,0.025);\n",
       "}\n",
       ".has-error .input-group-addon {\n",
       " color: #de143d;\n",
       " border-color: transparent;\n",
       " background: inherit;\n",
       " background-color: rgba(192,57,67,.10);\n",
       "}\n",
       ".has-error .form-control {\n",
       " border-color: #de143d;\n",
       " -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,0.025);\n",
       " box-shadow: inset 0 1px 1px rgba(0,0,0,0.025);\n",
       "}\n",
       ".kse-input-group-pretty > kbd {\n",
       " font-family: monospace, monospace;\n",
       " color: #303030;\n",
       " font-weight: normal;\n",
       " background: transparent;\n",
       "}\n",
       ".kse-input-group-pretty > kbd {\n",
       " font-family: monospace, monospace;\n",
       " color: #303030;\n",
       " font-weight: normal;\n",
       " background: transparent;\n",
       "}\n",
       "div.nbext-enable-btns .btn[disabled],\n",
       "div.nbext-enable-btns .btn[disabled]:hover,\n",
       ".btn-default.disabled,\n",
       ".btn-default[disabled] {\n",
       " background: #e2e2e2;\n",
       " background-color: #e2e2e2;\n",
       " color: #282828;\n",
       "}\n",
       "label#Keyword-Filter {\n",
       " display: none;\n",
       "}\n",
       ".input-group .nbext-list-btn-add,\n",
       ".input-group-btn:last-child > .btn-group > .btn {\n",
       " background: #e4e4e4;\n",
       " background-color: #e4e4e4;\n",
       " border-color: #e4e4e4;\n",
       " border: 2px solid #e4e4e4;\n",
       "}\n",
       ".input-group .nbext-list-btn-add:hover,\n",
       ".input-group-btn:last-child > .btn-group > .btn:hover {\n",
       " background: #dfdfdf;\n",
       " background-color: #dfdfdf;\n",
       " border-color: #dfdfdf;\n",
       " border: 2px solid #dfdfdf;\n",
       "}\n",
       "#notebook-container > div.cell.code_cell.rendered.selected > div.widget-area > div.widget-subarea > div > div.widget_item.btn-group > button.btn.btn-default.dropdown-toggle.widget-combo-carrot-btn {\n",
       " background: #e4e4e4;\n",
       " background-color: #e4e4e4;\n",
       " border-color: #e4e4e4;\n",
       "}\n",
       "#notebook-container > div.cell.code_cell.rendered.selected > div.widget-area > div.widget-subarea > div > div.widget_item.btn-group > button.btn.btn-default.dropdown-toggle.widget-combo-carrot-btn:hover {\n",
       " background: #dfdfdf;\n",
       " background-color: #dfdfdf;\n",
       " border-color: #dfdfdf;\n",
       "}\n",
       ".ui-widget-content {\n",
       " background: #e5e5e5;\n",
       " background-color: #e5e5e5;\n",
       " border: 2px solid #e5e5e5;\n",
       " color: #303030;\n",
       "}\n",
       "div.collapsible_headings_toggle {\n",
       " color: rgba(180,180,180,.30) !important;\n",
       "}\n",
       "div.collapsible_headings_toggle:hover {\n",
       " color: #ff7823 !important;\n",
       "}\n",
       ".collapsible_headings_toggle .h1,\n",
       ".collapsible_headings_toggle .h2,\n",
       ".collapsible_headings_toggle .h3,\n",
       ".collapsible_headings_toggle .h4,\n",
       ".collapsible_headings_toggle .h5,\n",
       ".collapsible_headings_toggle .h6 {\n",
       " margin: 0.3em .4em 0em 0em !important;\n",
       " line-height: 1.2 !important;\n",
       "}\n",
       "div.collapsible_headings_toggle .fa-caret-down:before,\n",
       "div.collapsible_headings_toggle .fa-caret-right:before {\n",
       " font-size: xx-large;\n",
       " transition: transform 1000ms;\n",
       " transform: none !important;\n",
       "}\n",
       ".collapsible_headings_collapsed.collapsible_headings_ellipsis .rendered_html h1:after,\n",
       ".collapsible_headings_collapsed.collapsible_headings_ellipsis .rendered_html h2:after,\n",
       ".collapsible_headings_collapsed.collapsible_headings_ellipsis .rendered_html h3:after,\n",
       ".collapsible_headings_collapsed.collapsible_headings_ellipsis .rendered_html h4:after,\n",
       ".collapsible_headings_collapsed.collapsible_headings_ellipsis .rendered_html h5:after,\n",
       ".collapsible_headings_collapsed.collapsible_headings_ellipsis .rendered_html h6:after {\n",
       " position: absolute;\n",
       " right: 0;\n",
       " bottom: 20% !important;\n",
       " content: \"[\\002026]\";\n",
       " color: rgba(180,180,180,.30) !important;\n",
       " padding: 0.5em 0em 0em 0em !important;\n",
       "}\n",
       ".collapsible_headings_ellipsis .rendered_html h1,\n",
       ".collapsible_headings_ellipsis .rendered_html h2,\n",
       ".collapsible_headings_ellipsis .rendered_html h3,\n",
       ".collapsible_headings_ellipsis .rendered_html h4,\n",
       ".collapsible_headings_ellipsis .rendered_html h5,\n",
       ".collapsible_headings_ellipsis .rendered_html h6,\n",
       ".collapsible_headings_toggle .fa {\n",
       " transition: transform 1000ms !important;\n",
       " -webkit-transform: inherit !important;\n",
       " -moz-transform: inherit !important;\n",
       " -ms-transform: inherit !important;\n",
       " -o-transform: inherit !important;\n",
       " transform: inherit !important;\n",
       " padding-right: 0px !important;\n",
       "}\n",
       "#toc-wrapper {\n",
       " z-index: 90;\n",
       " position: fixed !important;\n",
       " display: flex;\n",
       " flex-direction: column;\n",
       " overflow: hidden;\n",
       " padding: 10px;\n",
       " border-style: solid;\n",
       " border-width: thin;\n",
       " border-right-width: medium !important;\n",
       " background-color: #ffffff !important;\n",
       "}\n",
       "#toc-wrapper.ui-draggable.ui-resizable.sidebar-wrapper {\n",
       " border-color: rgba(180,180,180,.14) !important;\n",
       "}\n",
       "#toc a,\n",
       "#navigate_menu a,\n",
       ".toc {\n",
       " color: #303030 !important;\n",
       " font-size: 11pt !important;\n",
       "}\n",
       "#toc li > span:hover {\n",
       " background-color: #d4d4d4 !important;\n",
       "}\n",
       "#toc a:hover,\n",
       "#navigate_menu a:hover,\n",
       ".toc {\n",
       " color: #1c1c1c !important;\n",
       " font-size: 11pt !important;\n",
       "}\n",
       "#toc-wrapper .toc-item-num {\n",
       " color: #ff7823 !important;\n",
       " font-size: 11pt !important;\n",
       "}\n",
       "input.raw_input {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 11pt !important;\n",
       " color: #303030;\n",
       " background-color: #efefef;\n",
       " border-color: #ececec;\n",
       " background: #ececec;\n",
       " width: auto;\n",
       " vertical-align: baseline;\n",
       " padding: 0em 0.25em;\n",
       " margin: 0em 0.25em;\n",
       " -webkit-box-shadow: none;\n",
       " box-shadow: none;\n",
       "}\n",
       "audio,\n",
       "video {\n",
       " display: inline;\n",
       " vertical-align: middle;\n",
       " align-content: center;\n",
       " margin-left: 20%;\n",
       "}\n",
       ".cmd-palette .modal-body {\n",
       " padding: 0px;\n",
       " margin: 0px;\n",
       "}\n",
       ".cmd-palette form {\n",
       " background: #e5e5e5;\n",
       " background-color: #e5e5e5;\n",
       "}\n",
       ".typeahead-field input:last-child,\n",
       ".typeahead-hint {\n",
       " background: #e5e5e5;\n",
       " background-color: #e5e5e5;\n",
       " z-index: 1;\n",
       "}\n",
       ".typeahead-field input {\n",
       " font-family: sans-serif;\n",
       " color: #303030;\n",
       " border: none;\n",
       " font-size: 28pt;\n",
       " display: inline-block;\n",
       " line-height: inherit;\n",
       " padding: 3px 10px;\n",
       " height: 70px;\n",
       "}\n",
       ".typeahead-select {\n",
       " background-color: #e5e5e5;\n",
       "}\n",
       "body > div.modal.cmd-palette.typeahead-field {\n",
       " display: table;\n",
       " border-collapse: separate;\n",
       " background-color: #f4f4f4;\n",
       "}\n",
       ".typeahead-container button {\n",
       " font-family: sans-serif;\n",
       " font-size: 28pt;\n",
       " background-color: #e4e4e4;\n",
       " border: none;\n",
       " display: inline-block;\n",
       " line-height: inherit;\n",
       " padding: 3px 10px;\n",
       " height: 70px;\n",
       "}\n",
       ".typeahead-search-icon {\n",
       " min-width: 40px;\n",
       " min-height: 55px;\n",
       " display: block;\n",
       " vertical-align: middle;\n",
       " text-align: center;\n",
       "}\n",
       ".typeahead-container button:focus,\n",
       ".typeahead-container button:hover {\n",
       " color: #2f2f2f;\n",
       " background-color: #dfdfdf;\n",
       " border-color: #e0e0e0;\n",
       "}\n",
       ".typeahead-list > li.typeahead-group.active > a,\n",
       ".typeahead-list > li.typeahead-group > a,\n",
       ".typeahead-list > li.typeahead-group > a:focus,\n",
       ".typeahead-list > li.typeahead-group > a:hover {\n",
       " display: none;\n",
       "}\n",
       ".typeahead-dropdown > li > a,\n",
       ".typeahead-list > li > a {\n",
       " color: #303030;\n",
       " text-decoration: none;\n",
       "}\n",
       ".typeahead-dropdown,\n",
       ".typeahead-list {\n",
       " font-family: sans-serif;\n",
       " font-size: 13pt;\n",
       " color: #303030;\n",
       " background-color: #ffffff;\n",
       " border: none;\n",
       " background-clip: padding-box;\n",
       " margin-top: 0px;\n",
       " padding: 3px 2px 3px 0px;\n",
       " line-height: 1.7;\n",
       "}\n",
       ".typeahead-dropdown > li.active > a,\n",
       ".typeahead-dropdown > li > a:focus,\n",
       ".typeahead-dropdown > li > a:hover,\n",
       ".typeahead-list > li.active > a,\n",
       ".typeahead-list > li > a:focus,\n",
       ".typeahead-list > li > a:hover {\n",
       " color: #2f2f2f;\n",
       " background-color: #f4f4f4;\n",
       " border-color: #f4f4f4;\n",
       "}\n",
       ".command-shortcut:before {\n",
       " content: \"(command)\";\n",
       " padding-right: 3px;\n",
       " color: #828892;\n",
       "}\n",
       ".edit-shortcut:before {\n",
       " content: \"(edit)\";\n",
       " padding-right: 3px;\n",
       " color: #828892;\n",
       "}\n",
       "ul.typeahead-list i {\n",
       " margin-left: 1px;\n",
       " width: 18px;\n",
       " margin-right: 10px;\n",
       "}\n",
       "ul.typeahead-list {\n",
       " max-height: 50vh;\n",
       " overflow: auto;\n",
       "}\n",
       ".typeahead-list > li {\n",
       " position: relative;\n",
       " border: none;\n",
       "}\n",
       "div.input.typeahead-hint,\n",
       "input.typeahead-hint,\n",
       "body > div.modal.cmd-palette.in > div > div > div > form > div > div.typeahead-field > span.typeahead-query > input.typeahead-hint {\n",
       " color: #828892 !important;\n",
       " background-color: transparent;\n",
       " padding: 3px 10px;\n",
       "}\n",
       ".typeahead-dropdown > li > a,\n",
       ".typeahead-list > li > a {\n",
       " display: block;\n",
       " padding: 5px;\n",
       " clear: both;\n",
       " font-weight: 400;\n",
       " line-height: 1.7;\n",
       " border: 1px solid #ffffff;\n",
       " border-bottom-color: rgba(180,180,180,.30);\n",
       "}\n",
       "body > div.modal.cmd-palette.in > div {\n",
       " min-width: 750px;\n",
       " margin: 150px auto;\n",
       "}\n",
       ".typeahead-container strong {\n",
       " font-weight: bolder;\n",
       " color: #ff7823;\n",
       "}\n",
       "#find-and-replace #replace-preview .match,\n",
       "#find-and-replace #replace-preview .insert {\n",
       " color: #ffffff;\n",
       " background-color: #ff7823;\n",
       " border-color: #ff7823;\n",
       " border-style: solid;\n",
       " border-width: 1px;\n",
       " border-radius: 0px;\n",
       "}\n",
       "#find-and-replace #replace-preview .replace .match {\n",
       " background-color: #de143d;\n",
       " border-color: #de143d;\n",
       " border-radius: 0px;\n",
       "}\n",
       "#find-and-replace #replace-preview .replace .insert {\n",
       " background-color: #009e07;\n",
       " border-color: #009e07;\n",
       " border-radius: 0px;\n",
       "}\n",
       ".jupyter-dashboard-menu-item.selected::before {\n",
       " font-family: 'FontAwesome' !important;\n",
       " content: '\\f00c' !important;\n",
       " position: absolute !important;\n",
       " color: #ff7823 !important;\n",
       " left: 0px !important;\n",
       " top: 13px !important;\n",
       " font-size: 12px !important;\n",
       "}\n",
       ".shortcut_key,\n",
       "span.shortcut_key {\n",
       " display: inline-block;\n",
       " width: 16ex;\n",
       " text-align: right;\n",
       " font-family: monospace;\n",
       "}\n",
       ".jupyter-keybindings {\n",
       " padding: 1px;\n",
       " line-height: 24px;\n",
       " border-bottom: 1px solid rgba(180,180,180,.14);\n",
       "}\n",
       ".jupyter-keybindings i {\n",
       " background: #efefef;\n",
       " font-size: small;\n",
       " padding: 5px;\n",
       " margin-left: 7px;\n",
       "}\n",
       "div#short-key-bindings-intro.well,\n",
       ".well {\n",
       " background-color: #e4e4e4;\n",
       " border: 1px solid #e4e4e4;\n",
       " color: #303030;\n",
       " border-radius: 2px;\n",
       " -webkit-box-shadow: none;\n",
       " box-shadow: none;\n",
       "}\n",
       "#texteditor-backdrop {\n",
       " background: #ffffff;\n",
       " background-color: #ffffff;\n",
       "}\n",
       "#texteditor-backdrop #texteditor-container .CodeMirror-gutter,\n",
       "#texteditor-backdrop #texteditor-container .CodeMirror-gutters {\n",
       " background: #e0e1e3;\n",
       " background-color: #e0e1e3;\n",
       " color: #828892;\n",
       "}\n",
       ".edit_app #menubar .navbar {\n",
       " margin-bottom: 0px;\n",
       "}\n",
       "#texteditor-backdrop #texteditor-container {\n",
       " padding: 0px;\n",
       " background-color: #ededed;\n",
       " box-shadow: none;\n",
       "}\n",
       ".terminal-app {\n",
       " background: #ffffff;\n",
       "}\n",
       ".terminal-app > #header {\n",
       " background: #ffffff;\n",
       "}\n",
       ".terminal-app .terminal {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 11pt;\n",
       " line-height: 170%;\n",
       " color: #303030;\n",
       " background: #ededed;\n",
       " padding: 0.4em;\n",
       " border-radius: 2px;\n",
       " -webkit-box-shadow: none;\n",
       " box-shadow: none;\n",
       "}\n",
       ".terminal .xterm-viewport {\n",
       " background-color: #ededed;\n",
       " color: #303030;\n",
       " overflow-y: auto;\n",
       "}\n",
       ".terminal .xterm-color-0 {\n",
       " color: #ff7823;\n",
       "}\n",
       ".terminal .xterm-color-1 {\n",
       " color: #de143d;\n",
       "}\n",
       ".terminal .xterm-color-2 {\n",
       " color: #713bc5;\n",
       "}\n",
       ".terminal .xterm-color-3 {\n",
       " color: #e22978;\n",
       "}\n",
       ".terminal .xterm-color-4 {\n",
       " color: #ff8132;\n",
       "}\n",
       ".terminal .xterm-color-5 {\n",
       " color: #009e07;\n",
       "}\n",
       ".terminal .xterm-color-6 {\n",
       " color: #e22978;\n",
       "}\n",
       ".terminal .xterm-color-7 {\n",
       " color: #e22978;\n",
       "}\n",
       ".terminal .xterm-color-8 {\n",
       " color: #ef5c00;\n",
       "}\n",
       ".terminal .xterm-color-9 {\n",
       " color: #009e07;\n",
       "}\n",
       ".terminal .xterm-color-10 {\n",
       " color: #e22978;\n",
       "}\n",
       ".terminal .xterm-color-14 {\n",
       " color: #e22978;\n",
       "}\n",
       ".terminal .xterm-bg-color-15 {\n",
       " background-color: #ededed;\n",
       "}\n",
       ".terminal:not(.xterm-cursor-style-underline):not(.xterm-cursor-style-bar) .terminal-cursor {\n",
       " background-color: #ff7823;\n",
       " color: #ededed;\n",
       "}\n",
       ".terminal:not(.focus) .terminal-cursor {\n",
       " outline: 1px solid #ff7823;\n",
       " outline-offset: -1px;\n",
       "}\n",
       ".celltoolbar {\n",
       " font-size: 100%;\n",
       " padding-top: 3px;\n",
       " border-color: transparent;\n",
       " border-bottom: thin solid #828892;\n",
       " background: transparent;\n",
       "}\n",
       ".cell-tag,\n",
       ".tags-input input,\n",
       ".tags-input button {\n",
       " color: #303030;\n",
       " background-color: #ffffff;\n",
       " background-image: none;\n",
       " border: 1px solid #303030;\n",
       " border-radius: 1px;\n",
       " box-shadow: none;\n",
       " width: inherit;\n",
       " font-size: inherit;\n",
       " height: 22px;\n",
       " line-height: 22px;\n",
       "}\n",
       "#notebook-container > div.cell.code_cell.rendered.selected > div.input > div.inner_cell > div.ctb_hideshow.ctb_show > div > div > button,\n",
       "#notebook-container > div.input > div.inner_cell > div.ctb_hideshow.ctb_show > div > div > button {\n",
       " font-size: 10pt;\n",
       " color: #303030;\n",
       " background-color: #ffffff;\n",
       " background-image: none;\n",
       " border: 1px solid #303030;\n",
       " border-radius: 1px;\n",
       " box-shadow: none;\n",
       " width: inherit;\n",
       " font-size: inherit;\n",
       " height: 22px;\n",
       " line-height: 22px;\n",
       "}\n",
       "div#pager #pager-contents {\n",
       " background: #ffffff !important;\n",
       " background-color: #ffffff !important;\n",
       "}\n",
       "div#pager pre {\n",
       " color: #303030 !important;\n",
       " background: #ededed !important;\n",
       " background-color: #ededed !important;\n",
       " padding: 0.4em;\n",
       "}\n",
       "div#pager .ui-resizable-handle {\n",
       " top: 0px;\n",
       " height: 8px;\n",
       " background: #ff7823 !important;\n",
       " border-top: 1px solid #ff7823;\n",
       " border-bottom: 1px solid #ff7823;\n",
       "}\n",
       "div.CodeMirror,\n",
       "div.CodeMirror pre {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 11pt;\n",
       " line-height: 170%;\n",
       " color: #303030;\n",
       "}\n",
       "div.CodeMirror-lines {\n",
       " padding-bottom: .9em;\n",
       " padding-left: .5em;\n",
       " padding-right: 1.5em;\n",
       " padding-top: .7em;\n",
       "}\n",
       "span.ansiblack,\n",
       ".ansi-black-fg {\n",
       " color: #e22978;\n",
       "}\n",
       "span.ansiblue,\n",
       ".ansi-blue-fg,\n",
       ".ansi-blue-intense-fg {\n",
       " color: #009e07;\n",
       "}\n",
       "span.ansigray,\n",
       ".ansi-gray-fg,\n",
       ".ansi-gray-intense-fg {\n",
       " color: #ff8132;\n",
       "}\n",
       "span.ansigreen,\n",
       ".ansi-green-fg {\n",
       " color: #333333;\n",
       "}\n",
       ".ansi-green-intense-fg {\n",
       " color: #ff8132;\n",
       "}\n",
       "span.ansipurple,\n",
       ".ansi-purple-fg,\n",
       ".ansi-purple-intense-fg {\n",
       " color: #653bc5;\n",
       "}\n",
       "span.ansicyan,\n",
       ".ansi-cyan-fg,\n",
       ".ansi-cyan-intense-fg {\n",
       " color: #653bc5;\n",
       "}\n",
       "span.ansiyellow,\n",
       ".ansi-yellow-fg,\n",
       ".ansi-yellow-intense-fg {\n",
       " color: #ff8132;\n",
       "}\n",
       "span.ansired,\n",
       ".ansi-red-fg,\n",
       ".ansi-red-intense-fg {\n",
       " color: #de143d;\n",
       "}\n",
       "div.output-stderr {\n",
       " background-color: #ebb5b7;\n",
       "}\n",
       "div.output-stderr pre {\n",
       " color: #000000;\n",
       "}\n",
       "div.js-error {\n",
       " color: #de143d;\n",
       "}\n",
       ".ipython_tooltip {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 11pt;\n",
       " line-height: 170%;\n",
       " border: 2px solid #dadada;\n",
       " background: #eeeeee;\n",
       " background-color: #eeeeee;\n",
       " border-radius: 2px;\n",
       " overflow-x: visible;\n",
       " overflow-y: visible;\n",
       " box-shadow: none;\n",
       " position: absolute;\n",
       " z-index: 1000;\n",
       "}\n",
       ".ipython_tooltip .tooltiptext pre {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 11pt;\n",
       " line-height: 170%;\n",
       " background: #eeeeee;\n",
       " background-color: #eeeeee;\n",
       " color: #303030;\n",
       " overflow-x: visible;\n",
       " overflow-y: visible;\n",
       " max-width: 900px;\n",
       "}\n",
       "div#tooltip.ipython_tooltip {\n",
       " overflow-x: wrap;\n",
       " overflow-y: visible;\n",
       " max-width: 800px;\n",
       "}\n",
       "div.tooltiptext.bigtooltip {\n",
       " overflow-x: visible;\n",
       " overflow-y: scroll;\n",
       " height: 400px;\n",
       " max-width: 800px;\n",
       "}\n",
       ".cm-s-ipython.CodeMirror {\n",
       " font-family: monospace, monospace;\n",
       " font-size: 11pt;\n",
       " background: #ededed;\n",
       " color: #303030;\n",
       " border-radius: 2px;\n",
       " font-style: normal;\n",
       " font-weight: normal;\n",
       "}\n",
       ".cm-s-ipython div.CodeMirror-selected {\n",
       " background: #e0e1e3;\n",
       "}\n",
       ".CodeMirror-gutters {\n",
       " border: none;\n",
       " border-right: 1px solid #e0e1e3 !important;\n",
       " background-color: #e0e1e3 !important;\n",
       " background: #e0e1e3 !important;\n",
       " border-radius: 0px;\n",
       " white-space: nowrap;\n",
       "}\n",
       ".cm-s-ipython .CodeMirror-gutters {\n",
       " background: #e0e1e3;\n",
       " border: none;\n",
       " border-radius: 0px;\n",
       " width: 36px;\n",
       "}\n",
       ".cm-s-ipython .CodeMirror-linenumber {\n",
       " color: #828892;\n",
       "}\n",
       ".CodeMirror-sizer {\n",
       " margin-left: 40px;\n",
       "}\n",
       ".CodeMirror-linenumber,\n",
       "div.CodeMirror-linenumber,\n",
       ".CodeMirror-gutter.CodeMirror-linenumberdiv.CodeMirror-gutter.CodeMirror-linenumber {\n",
       " padding-right: 1px;\n",
       " margin-left: 0px;\n",
       " margin: 0px;\n",
       " width: 26px !important;\n",
       " padding: 0px;\n",
       " text-align: right;\n",
       "}\n",
       ".CodeMirror-linenumber {\n",
       " color: #828892;\n",
       "}\n",
       ".cm-s-ipython .CodeMirror-cursor {\n",
       " border-left: 2px solid #ff711a !important;\n",
       "}\n",
       ".cm-s-ipython span.cm-comment {\n",
       " color: #8d8d8d;\n",
       " font-style: italic;\n",
       "}\n",
       ".cm-s-ipython span.cm-atom {\n",
       " color: #055be0;\n",
       "}\n",
       ".cm-s-ipython span.cm-number {\n",
       " color: #ff8132;\n",
       "}\n",
       ".cm-s-ipython span.cm-property {\n",
       " color: #303030;\n",
       "}\n",
       ".cm-s-ipython span.cm-attribute {\n",
       " color: #303030;\n",
       "}\n",
       ".cm-s-ipython span.cm-keyword {\n",
       " color: #713bc5;\n",
       " font-weight: normal;\n",
       "}\n",
       ".cm-s-ipython span.cm-string {\n",
       " color: #009e07;\n",
       "}\n",
       ".cm-s-ipython span.cm-meta {\n",
       " color: #aa22ff;\n",
       "}\n",
       ".cm-s-ipython span.cm-operator {\n",
       " color: #055be0;\n",
       "}\n",
       ".cm-s-ipython span.cm-builtin {\n",
       " color: #e22978;\n",
       "}\n",
       ".cm-s-ipython span.cm-variable {\n",
       " color: #303030;\n",
       "}\n",
       ".cm-s-ipython span.cm-variable-2 {\n",
       " color: #de143d;\n",
       "}\n",
       ".cm-s-ipython span.cm-variable-3 {\n",
       " color: #aa22ff;\n",
       "}\n",
       ".cm-s-ipython span.cm-def {\n",
       " color: #e22978;\n",
       " font-weight: normal;\n",
       "}\n",
       ".cm-s-ipython span.cm-error {\n",
       " background: rgba(191,11,55,.70);\n",
       "}\n",
       ".cm-s-ipython span.cm-tag {\n",
       " color: #e22978;\n",
       "}\n",
       ".cm-s-ipython span.cm-link {\n",
       " color: #ef5c00;\n",
       "}\n",
       ".cm-s-ipython span.cm-storage {\n",
       " color: #055be0;\n",
       "}\n",
       ".cm-s-ipython span.cm-entity {\n",
       " color: #e22978;\n",
       "}\n",
       ".cm-s-ipython span.cm-quote {\n",
       " color: #009e07;\n",
       "}\n",
       "div.CodeMirror span.CodeMirror-matchingbracket {\n",
       " color: #ffffff;\n",
       " font-weight: bold;\n",
       " background-color: #009e07;\n",
       "}\n",
       "div.CodeMirror span.CodeMirror-nonmatchingbracket {\n",
       " color: #ffffff;\n",
       " font-weight: bold;\n",
       " background: rgba(191,11,55,.70) !important;\n",
       "}\n",
       ".cm-header-1 {\n",
       " font-size: 215%;\n",
       "}\n",
       ".cm-header-2 {\n",
       " font-size: 180%;\n",
       "}\n",
       ".cm-header-3 {\n",
       " font-size: 150%;\n",
       "}\n",
       ".cm-header-4 {\n",
       " font-size: 120%;\n",
       "}\n",
       ".cm-header-5 {\n",
       " font-size: 100%;\n",
       "}\n",
       ".cm-s-default .cm-hr {\n",
       " color: #055be0;\n",
       "}\n",
       "div.cell.text_cell .cm-s-default .cm-header {\n",
       " font-family: sans-serif;\n",
       " font-weight: normal;\n",
       " color: #126dce !important;\n",
       " margin-top: 0.3em !important;\n",
       " margin-bottom: 0.3em !important;\n",
       "}\n",
       "div.cell.text_cell .cm-s-default span.cm-variable-2 {\n",
       " color: #353535 !important;\n",
       "}\n",
       "div.cell.text_cell .cm-s-default span.cm-variable-3 {\n",
       " color: #aa22ff !important;\n",
       "}\n",
       ".cm-s-default span.cm-comment {\n",
       " color: #8d8d8d !important;\n",
       "}\n",
       ".cm-s-default .cm-tag {\n",
       " color: #009fb7;\n",
       "}\n",
       ".cm-s-default .cm-builtin {\n",
       " color: #e22978;\n",
       "}\n",
       ".cm-s-default .cm-string {\n",
       " color: #009e07;\n",
       "}\n",
       ".cm-s-default .cm-keyword {\n",
       " color: #713bc5;\n",
       "}\n",
       ".cm-s-default .cm-number {\n",
       " color: #ff8132;\n",
       "}\n",
       ".cm-s-default .cm-error {\n",
       " color: #055be0;\n",
       "}\n",
       ".cm-s-default .cm-link {\n",
       " color: #ef5c00;\n",
       "}\n",
       ".cm-s-default .cm-atom {\n",
       " color: #ff8132;\n",
       "}\n",
       ".cm-s-default .cm-def {\n",
       " color: #e22978;\n",
       "}\n",
       ".CodeMirror-cursor {\n",
       " border-left: 2px solid #ff711a !important;\n",
       " border-right: none;\n",
       " width: 0;\n",
       "}\n",
       ".cm-s-default div.CodeMirror-selected {\n",
       " background: #e0e1e3;\n",
       "}\n",
       ".cm-s-default .cm-selected {\n",
       " background: #e0e1e3;\n",
       "}\n",
       ".MathJax_Display,\n",
       ".MathJax {\n",
       " border: 0 !important;\n",
       " font-size: 100% !important;\n",
       " text-align: center !important;\n",
       " margin: 0em !important;\n",
       " line-height: 2.25 !important;\n",
       "}\n",
       ".MathJax:focus,\n",
       "body :focus .MathJax {\n",
       " display: inline-block !important;\n",
       "}\n",
       ".MathJax:focus,\n",
       "body :focus .MathJax {\n",
       " display: inline-block !important;\n",
       "}\n",
       ".completions {\n",
       " position: absolute;\n",
       " z-index: 110;\n",
       " overflow: hidden;\n",
       " border: medium solid rgba(240,147,43,.50);\n",
       " box-shadow: none;\n",
       " line-height: 1;\n",
       "}\n",
       ".completions select {\n",
       " background: #ededed;\n",
       " background-color: #ededed;\n",
       " outline: none;\n",
       " border: none;\n",
       " padding: 0px;\n",
       " margin: 0px;\n",
       " margin-left: 2px;\n",
       " overflow: auto;\n",
       " font-family: monospace, monospace;\n",
       " font-size: 11pt;\n",
       " color: #303030;\n",
       " width: auto;\n",
       "}\n",
       "div#maintoolbar {\n",
       " display: none !important;\n",
       "}\n",
       "#header-container {\n",
       " display: none !important;\n",
       "}\n",
       "\n",
       "<script>\n",
       "    MathJax.Hub.Config({\n",
       "        \"HTML-CSS\": {\n",
       "            /*preferredFont: \"TeX\",*/\n",
       "            /*availableFonts: [\"TeX\", \"STIX\"],*/\n",
       "            styles: {\n",
       "                scale: 100,\n",
       "                \".MathJax_Display\": {\n",
       "                    \"font-size\": \"100%\",\n",
       "                }\n",
       "            }\n",
       "        }\n",
       "    });\n",
       "</script>\n",
       "     </style>"
      ],
      "text/plain": [
       "<IPython.core.display.HTML object>"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "from jupyterthemes.stylefx import set_nb_theme\n",
    "# onedork | grade3 | oceans16 | chesterish | monokai | solarizedl | solarizedd\n",
    "set_nb_theme('grade3')"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.6.8"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 2
}