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@import "reset.css";body{font-family:'PingFang SC','Helvetica Neue','Helvetica','STHeitiSC-Light','Arial',sans-serif;overflow-x:hidden}.top-nav-wrap{width:100%;z-index:9999;position:absolute;top:0;left:0}.top-nav-wrap-fix{position:fixed;top:0;left:0}.top-nav #solv-sub-menu li:hover a{color:#379fff}.top-nav .tn-header{width:90%;margin:0 auto;position:relative;font-family:"Microsoft YaHei","微软雅黑","SimSun","宋体";*zoom:1}.top-nav .tn-header:before,.top-nav .tn-header:after{display:table;content:""}.top-nav .tn-header:after{clear:both}.top-nav .tn-logo{float:left;width:114px;height:42px;margin-top:17px;background:url(../images/duer-logo.png) 0 0 no-repeat;-webkit-background-size:108px 42px;background-size:108px 42px}.top-nav .tn-menu-r{float:right}.top-nav .tn-menu-r div{float:left;height:75px;line-height:75px;margin-left:55px}.top-nav .tn-menu-r div:first-child{margin-left:0}.top-nav .tn-menu-r div a{color:rgba(255,255,255,0.5);text-decoration:none;font-size:14px}.top-nav .tn-menu-r 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