css处理最后一个li

.relatebar li{width:98px;height:146px;padding:5px;float:left;border-left:1px solid #ccc;}

.relatebar li:first-child{border-left:0px solid #ccc;}

.lanmu3 .k2 .item ul{display: block;float: left;width: 300px;}
.lanmu3 .k2 .item ul li{float: left;padding-left: 10px;padding-right: 10px;
    padding-bottom: 5px;border-right: 1px solid rgba(139,192,252,0.2);height: 12px;}
.lanmu3 .k2 .item ul li:last-child{border: 0px;}
.lanmu3 .k2 .item ul li a{color: #8bc0fc;font-size: 12px;}