/* tab */
.tab{width:1200px;margin:30px auto;}
.tab ul.menu{height:80px;background:#f7f7f7;}
.tab ul.menu li{float:left;margin-left: 10px; text-align:center;margin-top: 21px;background: #e3e3e3; width:193px;height:40px;border: 1px #ccc solid; line-height:40px;list-style:none;font-size:16px;cursor:pointer;}
.tab ul.menu li.active{background:#f7f7f7;color:#313131;}
.con1,.con2,.con3,.con4{margin-top:-2px;padding-top: 10px;}
.con2,.con3,.con4{display:none;}