main.css

/* DESKTOP STYLES (only applied to larger viewports) */

@media screen and (min-width: 970px) {

  /* these styles cause the sections to be rendered as individual pages */

    section {
        width: 700px;
        font-size: 1.3em;
        padding: 50px 100px 120px;
        margin: 32px auto 64px;
        border: 1px solid #CCC;
    }

}

/* MOBILE STYLES (only applied to smaller viewports) */

@media screen and (max-width: 969px) {

    /* these styles make things smaller and do not separate sections */

    section {
        font-size: 1.1em;
        padding: 30px 50px;
    }

    pre code {
        font-size: 14px;
    }

}

/* GENERIC STYLES (applied under all circumstances) */

body {
    background: #EEE;
    margin: 0;
}

section {
    color: #000;
    font-family: Times;
    line-height: 1.5em;
    background: white;
    box-shadow: 0 8px 10px -6px #777;
}

h1, h2, h3, h4 {
    color: #A31F34;
    font-family: Palatino;
    font-weight: 100;
    font-variant: small-caps;
    margin: 60px 0 30px;
}

h1 { /* the main header */
    font-size: 2.1em;
}

hr { /* the main header divider */
    border: 0;
    border-bottom: 1px solid #A31F34;
}

h2 { /* the section (page) headers */
  padding-bottom: 7px;
  border-bottom: 1px solid #A31F34;
}

h3 { /* the subsection headers */
  font-size: 1.3em;
}

h4 { /* the two special theorem headers */
    margin-bottom: -1em;
}

ol { /* latin ordered lists */
  list-style-type: lower-roman;
}

code { /* all code examples */
  color: #5F1515;
  font-size: 0.8em;
  font-family: Deja Vu Mono;
  line-height: 1em;
}

p code { /* inline code examples */
  padding: 0 6px;
  background: #FCFCFC;
  border: 1px solid #BABABA;
  border-radius: 2px;
}

abbr { /* used on acronyms (BNF, MIT ect) */
  font-size: 0.9em;
}

#legalese { /* the small print below the main header */
  color: #333;
  font-size: 0.8em;
}

#legalese code { /* the inline code within the small print */
  background: white;
  border: none;
}