style.css

a[href*=whatwg]:not([href*=github]):before {
  content: url('//images.whatwg.org/icon');
  padding-right: 4px;
}
a[href*=dev\.w3\.org]:before,
a[href*=www\.w3\.org]:not(.tests):before,
a[href*=dvcs\.w3\.org]:before,
a[href*=heycam\.github\.io]:before,
a[href*=slightlyoff\.github\.io]:before,
a[href*=w3c\.github\.io]:before,
a[href*=webassembly\.github\.io]:before,
a[href*=webaudio\.github\.io]:before,
a[href*=openpeer]:before,
a[href*=wiki\.csswg\.org]:before,
a[href*=drafts\.csswg\.org]:before,
a[href*=drafts\.fxtf\.org]:before,
a[href*=svgwg\.org]:before {
  content: "ⓦ";
  font-weight: bold;
  font-size: 16px;
  color: #347cb0;
  padding-right: 4px;
}
a[href*=ietf\.org]:before {
  content: "Ⓘ";
  font-weight: bold;
  font-size: 16px;
  color: black;
  padding-right: 4px;
}
a[href*=khronos\.org]:before {
  content: "Ⓚ";
  font-weight: bold;
  font-size: 16px;
  color: darkred;
  padding-right: 4px;
}
a[href*=tc39\.github\.io]:before,
a[href*=people\.mozilla\.org]:before,
a[href*=littledan\.github\.io]:before {
  content: "Ⓔ";
  font-weight: bold;
  font-size: 16px;
  color: black;
  padding-right: 4px;
}
a[href*=unicode\.org]:before {
  content: "Ⓤ";
  font-weight: bold;
  font-size: 16px;
  color: black;
  padding-right: 4px;
}
html {
  background: fixed #DDE5D9 url(data:image/gif;base64,R0lGODlhBAAEAIAAANra2v///yH5BAAAAAAALAAAAAAEAAQAAAIFTGB4xlcAOw==) repeat;
  font-family: "Lucida Sans Unicode", "Lucida Sans", verdana, arial, helvetica;
}
#contentCols, #content, #footer, #legend {
  font-size: 90%;
  border: solid 1px #CED4CA;
  background-color: #FFF;
  padding: 4px 4px 4px 20px;
  margin: 4px 10px 4px 10px;
}
#contentCols {
  margin-top: 20px;
  padding: 20px;
  column-count: 3; 
  column-gap: 10px;
  column-fill: balance;
  -moz-column-count: 3; 
  -moz-column-gap: 10px;
  -moz-column-fill: balance; 
  -webkit-column-count: 3; 
  -webkit-column-gap: 10px;
  -webkit-column-fill: balance;   
}
a, a:hover {
  color: #BF4F00;
  text-decoration: none;
}
a:hover, a:focus {
   color: #5F6D7A;
}
a.caniuse,
a.mdn,
a.tests
{
  color: #5F6D7A;
}
a.caniuse:hover, a.caniuse:focus,
a.mdn:hover, a.mdn:focus,
a.tests:hover, a.tests:focus
{
  color: #000000;
}
#github {
  position: absolute;
  top: 0;
  right: 0;
  border: 0;
}
h1 {
  background: #fff;
}
#contentCols h1 {
  padding: 10px;
  margin-top: 4px;
  border: 1px dashed #ccc;
  column-span: all;
  -moz-column-span: all;
  -webkit-column-span: all;
}
p {
  column-span: all;
  -moz-column-span: all;
  -webkit-column-span: all;
}
body > a + a{
  position: fixed;
  top: 0;
  right: 0;
} 
dl{
  margin-top: 0;
  padding-top: 0;
  break-inside: avoid;
}
dt {
  color: #0b5b9d;
  font-weight: bold;
  margin-top: 0;
  padding-top: 0;
  break-after: avoid;
}
dd {
  margin-left: 2em;
}
#legend dt, #legend dd {
  float: left;
}
#legend dd + dt {
  clear: left;
}
div {
  clear: left;
}
#legend dt {
}
#legend dd {
  margin-left: 8px;
}
#legend dl:after {
  content: "";
  display: table;
  clear: both;
}
h2 {
  font-size: 14px;
  color: #0B5B9D;
}
.pleaseUse,
.pleaseCaution {
  font-size: 120%;
}
.pleaseUse {
  color: #60AC39;
}
.pleaseCaution {
  color: #FA0;
}
.apiname {
  font-size: 80%;
}
@media all and (max-width : 1200px) {
  #contentCols {
    column-count: 2; 
    column-gap: 20px;
    column-fill: balance;

    -moz-column-count: 2; 
    -moz-column-gap: 20px;
    -moz-column-fill: balance; 

    -webkit-column-count: 2; 
    -webkit-column-gap: 20px;
    -webkit-column-fill: balance;   
  }
}

@media all and (max-width : 800px) {
  #contentCols {
    column-count: 1; 
    column-gap: 10px;
    column-fill: balance;

    -moz-column-count: 1; 
    -moz-column-gap: 10px;
    -moz-column-fill: balance; 

    -webkit-column-count: 1; 
    -webkit-column-gap: 10px;
    -webkit-column-fill: balance;   
  }
}