main.css

/* This file contains styling to make index.html prettier */
html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}

body {
    background: url("paper.jpg");
    background-size: 100% 100%;
    background-repeat: no-repeat;
    background-attachment: fixed;

    margin: 0 auto;
    max-width: 45em;
    font-size: 1.2em;
}

.wrapper {
    padding: 0 1em 2em 1em;
    color: #444;
}

table {
    margin: 0 auto;
    padding: 0.3em 0.5em;
    box-sizing: border-box;
    border-top: 0.2em solid black;
    border-bottom: 0.2em solid black;
    border-spacing: 0;
}

td {
    padding: 0.4em;
    text-align: center;
}

td p {
    margin: 0;
}

tr:first-child td {
    border-bottom: 0.1em solid black;
    padding-bottom: 0.7em;
}

tr:nth-child(2) td {
    padding-top: 0.7em;
}

tr:first-child {
    font-weight: bold;
}

td:first-child {
    font-weight: bold;
}

td:first-child,
td:nth-child(2) {
    text-align: left;
}

.code {
    font-family: monospace;
}