html5demos.css

body { 
  font: normal 16px/20px "Helvetica Neue", Helvetica, sans-serif;
  background: rgb(237, 237, 236);
  margin: 0;
  margin-top: 40px;
  padding: 0;
}

section, header, footer {
  display: block;
}

#wrapper {
  width: 600px;
  margin: 0 auto;
  background: #fff url(/images/shade.jpg) repeat-x center bottom;
  -moz-border-radius: 10px;
  -webkit-border-radius: 10px;
  border-radius: 10px;
  border-top: 1px solid #fff;
  padding-bottom: 76px;
}

h1 {
  padding-top: 10px;
}

h2 {
  font-size: 100%;
  font-style: italic;
}

header,
article > *,
footer > * {
  margin: 20px;
}

footer > * {
  margin: 20px;
  color: #999;
}

#status {
  padding: 5px;
  color: #fff;
  background: #ccc;
}

#status.fail {
  background: #c00;
}

#status.success {
  background: #0c0;
}

#status.offline {
  background: #c00;
}

#status.online {
  background: #0c0;
}

footer #built:hover:after {
  content: '...quickly';
}

[contenteditable]:hover {
  outline: 1px dotted #ccc;
}

abbr {
  border-bottom: 0;
}

abbr[title] {
  border-bottom: 1px dotted #ccc;
}

li {
  margin-bottom: 10px;
}

#ffad {
  font-size: 90%;
  border: 1px solid #ccc;
  background: #fcfcfc;
  display: block;
  -moz-border-radius-topleft: 25px;
  -webkit-border-top-left-radius: 25px;
  -moz-border-radius-bottomright: 25px;
  -webkit-border-bottom-right-radius: 25px;
  border-top-left-radius: 25px;
  border-bottom-right-radius: 25px;
  color: #000;
  text-decoration: none;
}

#ffad:hover {
  border-color: #919191;
}

#ffad section {
  padding: 20px;
}

#ffad p {
  margin: 10px 10px 10px 100px;
}

#ffad img {
  border: 0;
  float: left;
  display: block;
  margin: 14px 14px 0;
}

#ffad .definition {
  font-style: italic;
  font-family: Georgia,Palatino,Palatino Linotype,Times,Times New Roman,serif;
}

#ffad .url {
  text-decoration: underline;
}

input {
  font-size: 16px;
  padding: 3px;
  margin-left: 5px;  
}

#view-source {
  display: none;
}

body.view-source {
  margin: 0;
  background: #fff;
  padding: 20px;
}

body.view-source > * {
  display: none;
}

body.view-source #view-source {
  display: block !important;
  margin: 0;
}

#demos {
  width: 560px;
  border-collapse: collapse;
}

#demos .demo {
  padding: 5px;
}

#demos a {
  color: #00b;
  text-decoration: none;
  font-size: 14px;
}

#demos a:hover {
  text-decoration: underline;
}

#demos tbody tr {
  border-top: 1px solid #DCDCDC;
}


#demos .demo p {
  margin-top: 0;
  margin-bottom: 5px;
}

#demos .support {
  width: 105px;
}

#demos .support span {
  cursor: pointer;
  overflow: hidden;
  float: left;
  display: block;
  height: 16px;
  width: 16px;
  text-indent: -9999px;
  background-image: url(/images/browsers.gif);
  background-repeat: none;
  margin-right: 5px;
}

#demos .support span.selected {
  outline: 1px dashed #75784C;
}

#demos .support span.safari {
  background-position: 0 0;
}

#demos .support span.chrome {
  background-position: 16px 0;
}

#demos .support span.firefox {
  background-position: 32px 0;
}

#demos .support span.ie {
  background-position: 48px 0;
}

#demos .support span.opera {
  background-position: 64px 0;
}

#demos .support span.nightly {
  opacity: 0.5;
  filter:alpha(opacity=50);
}

#demos .support span.none {
  opacity: 0.1;
  filter:alpha(opacity=10);
}

#demos .tags {
  width: 140px;
}

#demos .tags span {
  font-size: 11px;
  color: #6E724E;
  padding: 2px 5px;
  border: 1px solid #D7D999;
  background: #FFFFC6;
  -moz-border-radius: 10px;
  -webkit-border-radius: 10px;
  border-radius: 10px;
  cursor: pointer;
}

#demos .tags span:hover,
#demos .tags span.selected {
  border: 1px solid #75784C;
  background: #FF7;  
  color: #333521;
}