body { background: #d9d9d9 url(bg.png) repeat-x; }
ul { margin: 114px auto; overflow: hidden; padding: 0; width: 306px; }
ul:after { clear: both; content: ""; display: table; }
li { float: left; list-style: none; margin: 0 30px 0 0; }
li:last-child { margin: 0; }
a { background: transparent url(icons.png) no-repeat; display: block; height: 51px; overflow: hidden; text-indent: -9999px; }
a.github { background-position: 0 0; width: 49px; }
a.linkedin { background-position: -53px 0; width: 50px; }
a.twitter { background-position: -107px 0; width: 53px; }
a.email { background-position: -164px 0; width: 64px; }