.clearfix:before, .clearfix:after {content:""; display:table}
.clearfix:after {clear:both}
.clearfix {zoom: 1}

.box {width:800px; padding:5px; margin-top:15px;}
.box > ul {margin:0; padding:0; list-style:none}
.box > ul li {margin:0 2px 0 0; padding:5px 10px; background:#f8ddbe; float:left; cursor:pointer; width:376px; text-align:center; border-top-right-radius:3px; border-radius:3px; border:1px solid black;}
.box > ul li.active {background-color:#fa5b34; color:#fff; font-weight:bold; text-shadow:none;}
#content{width:800px; border:none; min-height:100px; overflow:hidden; margin:-1px 0 0;}