.head_ad_m img{width:100%;}
.li_auto{width:auto!important;}
.cnsnav .navlayer{position: fixed;top: 50px;height: 100%;}
.cnsnav li{text-align:left;padding:5px 15px;box-sizing: border-box;}
.nav_title{width:100%;color:red;font-size:16px;float: left;}
.nav_title span{padding: 5px 10px 5px 0;margin: 15px 15px 5px 15px;display: inline-block;font-weight: bold;border-bottom: 1px solid red;}