*{margin:0;padding:0; font-family:'微软雅黑'}
ul,li{ list-style:none}
.box{width:500px;height:200px;margin:100px auto; overflow:hidden; position:relative;border:1px solid #ddd}
.box ul li{width:410px;height:200px; overflow:hidden}
.box ul li span{ display:block;float:left;width:130px;height:200px;margin-right:10px;background:#ddd}
.box ul li span:last-child{margin-right:0}
.box ul li span img{width:100%;height:100%;display:block}
.nav{position:absolute;top:0;right:0}
.nav a{display: block; padding: 5px; text-decoration: none; color: #666; margin: 7px 0; width: 60px; text-align: center;}
.nav a.on{color:#06C}
.line{position:absolute;height:200px;width:0;border-right:1px solid #ddd;top:0;right:80px}
.line em{position:absolute;width:3px; height:20px;background:#06C;right:-2px;top:10px}