经典选项卡 .tab{text-align:left;width:500px;border:#ccc 1px solid;margin:100px;} .tab dt{border-bottom:#ccc 1px solid;height:25px;background:#f1f1f1;margin-bottom:-1px;height:25px;line-height:25px;} .tab dt strong{padding:0 15px;color:#444;} .tab dt a{display:inline-block;cursor:pointer;padding:0 10px;text-align:center;background:#f1f1f1;color:#000;} .tab dt a.on{background:#fff;color:#333;font-weight:bold;border-bottom:1px solid #fff;border-right:1px solid #ccc;border-left:1px solid #ccc;} .tab dd{padding:10px;height:200px;clear:both;}