styles.css

html {
    font-size: 14px;
}


h1, h2, h3, h4, h5, h6 {
  color: #444;
  margin: 0 0 10px;
}

p, ul, ol, table, pre, dl {
  margin: 0 0 20px;
}

.wrapper {
  max-width: 650px;
  margin: 0 auto;
  position: relative;
  padding: 0 20px;
}


pre {
  overflow-x: visible;
}

section {
  max-width: 650px;
  padding: 30px 0px 50px 0px;
  margin: 20px 0;
  margin-top: 70px;
}


/*----------------------------
    Two column layout stuff
  ---------------------------*/
/* Main Section Headings and sub headings */
article .begin-examples ~ h2,
article .begin-examples ~ h2 + p {
    width: 100%;
    clear: both;
}

/* Columns */
article .begin-examples ~ h3,
article .begin-examples ~ p,
article .begin-examples ~ .highlight {
    width: 50%;
}

/* Left Column */
article .begin-examples ~ h3,
article .begin-examples ~ p {
    float: left;
    box-sizing: border-box;
    padding-right: 1rem;
    clear: both;
}

/* Right Column */
article .begin-examples ~ .highlight {
    float: right;
    clear: right;
    margin-bottom: 1rem;
}

/* Reset */
article .end-examples ~ p,
article .end-examples ~ h3,
article .end-examples ~ .highlight {
    width: auto;
    float: none;
    clear: none;
}

.end-examples {
    clear: both;
}

@media print, screen and (max-width: 580px) {

/*----------------------------
    Two column layout media
  ---------------------------*/
article .begin-examples ~ h3,
article .begin-examples ~ p,
article .begin-examples ~ .highlight {
    width: 100%;
    float: none;
    clear: none;
}

}


/*----------------------------------------------------------
    Other Styling
    
    Normally you would just put this in the sections above.
  ---------------------------------------------------------*/

h3 {
    font-weight: normal;
    text-size: 1rem;
}


.begin-examples ~ p {
    font-style: italic;
    font-size: 0.9rem;
}

.end-examples ~ p {
    font-style: normal;
    font-size: 1rem;
}

/*----------------------------
    Other media
  ---------------------------*/
@media print, screen and (max-width: 580px) {
article > h3,
article > p {
    padding: 0;
    margin-bottom: 0.2rem;
}

article .highlight {
    margin-bottom: 1.4rem;
    background: #f7f7f7;
    padding: 0.2rem;
    
    word-wrap: break-word;
}

article .highlight pre {
    margin-bottom: 0;
}

}