pre{background:#fefefe;border:1px solid #dedede;overflow-x:auto;padding:2em}#nav{left:20px;list-style:none;margin:0;position:fixed;top:20px}#nav li{margin-bottom:2px}#nav a{background:#ededed;color:#666;display:block;font-size:14px;padding:5px 10px;text-decoration:none;text-transform:uppercase}#nav a:hover{background:#dedede}#nav .current a{background:#666;color:#ededed}#container{margin:0 auto;width:800px}.section{border-bottom:5px solid #ccc;min-height:60vh;padding:50px 20px}.section p:last-child{margin-bottom:0}