.head-zwgk{padding-top:20px;width:1300px;margin:0 auto;line-height:64px;}.header-zwgk{background:url(/images/toppic_sy.png) no-repeat center top;height:360px;}.head-hd{width:1300px;margin:60px auto 0;padding-left:150px;box-sizing:border-box;}.head-hd img{max-width:100%;}.nav{box-shadow:0px 0px 20px 0px #dadada;}.wza-box{margin:0 auto;width:1200px;}