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.nav-item.on:nth-child(5){background-image:url(https://xyq.res.netease.com/m/zt/20181030102358/img/nav/nav_a5_on_09a892c.png)}.wrap-contain .nav-box .nav-item.on:nth-child(6){background-image:url(https://xyq.res.netease.com/m/zt/20181030102358/img/nav/nav_a6_on_cc9314a.png)}.wrap-contain .nav-box .nav-item a{font-size:0;width:1.12rem;height:2.5rem;position:absolute;top:.12rem;left:.23rem}.bar{background:url(https://xyq.res.netease.com/m/zt/20181030102358/img/top_bg_b24c50c.jpg) no-repeat;background-size:100%;width:100%;height:1rem;position:fixed;left:0;top:0;z-index:3}.bar .top-icon{background:url(https://webinput.nie.netease.com/img/xyq/icon3.png/128) no-repeat;background-size:100%;width:.79rem;height:.79rem;position:absolute;left:.29rem;top:.11rem}.bar .top-tit{position:absolute;font-size:.3rem;line-height:.3rem;font-weight:700;font-family:"Microsoft YaHei";color:#fffbfd;top:.21rem;left:1.2rem}.bar .top-desc{position:absolute;font-family:"Microsoft YaHei";font-size:.24rem;line-height:.24rem;left:1.2rem;top:.57rem;color:#fffbfd}.bar .top-btn{background:url(https://xyq.res.netease.com/m/zt/20181030102358/img/top-btn_3e898ef.jpg) no-repeat;background-size:100%;width:1.18rem;height:.6rem;position:absolute;right:.2rem;top:.21rem;border-radius:.06rem}