.list-back-tabs li{position: relative;}
.list-back-tabs li .nav-down{position: absolute;width: 200%;display:none;left:-50%;}
.list-back-tabs li .nav-down li a{padding:0 5px;    font-size: 15px;}
.list-back-tabs li .nav-down li a:before{display:none !important;}
.list-back-tabs li:hover .nav-down{display:block;}
.list-back-tabs li .nav-down a:hover{color:#fff;}.pange span{height:20px !important;}
.pange a{height:20px !important;}