style.css

body {
  font: 16px "Helvetica Neue","Open Sans",Helvetica,Calibri,sans-serif;
  color: #333;
  font-size-adjust: 0.5;
  line-height: 24px;
  margin: 75px auto;
  max-width: 624px;
  padding: 0 5px;
}

.title, .filename, h1, h2, h3, h4, h5 {
  font: 16px "Roboto Condensed","Helvetica Neue","Open Sans",Helvetica,Calibri,sans-serif;
  font-size-adjust: 0.5;
  font-weight: bold;
  color: #333;
  line-height: 100%;
  margin: 1.2em 0 0.3em;
}
.title, #rfc\.title h1 { font-size: 32px; }
h1, section h1, h2, section h2, section h3, nav h2 { font-size: 20px; }
h3, section h4, h4, section h5 { font-size: 16px; }
h1 a[href], h2 a[href], h3 a[href], h4 a[href] {
  color: #333;
}

table {
  margin-left: 0em;
  border-collapse: collapse;
}
th {
  text-align: left;
  border-bottom: 2px solid #ddd;
}
td {
  border-top: 1px solid #ddd;
  vertical-align: top;
}
tr:nth-child(2n+1) > td,
tr:nth-child(2n+1) > th {
  background-color: #f9f9f9;
}
td.reference {
  max-width: 200px;
  border-top: none;
  padding-right: 1em;
}
.right {
  text-align: right;
}


table.header, table#rfc\.headerblock {
  width: 100%;
}
table.header td, table#rfc\.headerblock td {
  border: none;
  background-color: transparent;
  color: black;
  padding: 0;
}
.filename {
  display: block;
  color: rgb(119, 119, 119);
  font-size: 20px;
  font-weight: normal;
  line-height: 100%;
  margin: 10px 0 32px;
}
#rfc\.abstract+p, #rfc\.abstract+p code, #rfc\.abstract+p samp, #rfc\.abstract+p tt {
  font-size: 20px;
  line-height: 28px;
}

samp, tt, code, pre, span.tt {
  font-size: 13.5px;
  font-family: Consolas, monospace;
  font-size-adjust: none;
}
pre {
  background-color: #eee;
  border: 1px solid #ddd;
  overflow-x: auto;
  padding: 5px;
  margin: 5px;
}
.figure, caption {
  font-style: italic;
  margin: 0 1.5em;
  text-align: left;
}

address {
  margin: 16px 2px;
  line-height: 20px;
}
.vcard {
  font-style: normal;
}
.vcardline {
  display: block;
}
.vcardline .fn, address b {
  font-weight: normal;
}
.vcardline .hidden {
  display: none;
}

dl {
  margin-left: 1em;
}
dl.dl-horizontal: {
  margin-left: 0;
}
dl > dt {
  float: left;
  margin-right: 1em;
}
dl.nohang > dt {
  float: none;
}
dl > dd {
  margin-bottom: .5em;
}
dl.compact > dd {
  margin-bottom: 0em;
}
dl > dd > dl {
  margin-top: 0.5em;
  margin-bottom: 0em;
}
ul.empty {
  list-style-type: none;
}
ul.empty li {
  margin-top: .5em;
}

hr {
  border: 0;
  border-top: 1px solid #eee;
}
hr.noprint {
  display: none;
}

a {
  text-decoration: none;
}
a[href] {
  color: #2a6496;
}
a[href]:hover {
  background-color: #eee;
}

p, ol, ul, li {
  padding: 0;
}
p {
  margin: 0.5em 0;
}
ol, ul {
  margin: 0.2em 0 0.2em 2em;
}
li {
  margin: 0.2em 0;
}
address {
  font-style: normal;
}

ul.toc ul {
  margin: 0 0 0 2em;
}
ul.toc li {
  list-style: none;
  margin: 0;
}

@media screen and (min-width: 924px) {
  body {
    padding-right: 350px;
  }
  body>ul.toc, body>#rfc\.toc {
    position: fixed;
    bottom: 0;
    right: 0;
    right: calc(50vw - 500px);
    width: 300px;
    z-index: 1;
    overflow: auto;
    overscroll-behavior: contain;
  }
  body>#rfc\.toc {
    top: 55px;
  }
  body>ul.toc {
    top: 100px;
  }

  ul.toc {
    margin: 0 0 0 4px;
    font-size: 12px;
    line-height: 20px;
  }
  ul.toc ul {
    margin-left: 1.2em;
  }
}