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no-repeat center center;position:fixed;bottom:45px;right:45px;z-index:9;display:none}.top_bak.on{display:block}.nav_right{display:none;width:145px;position:fixed;right:0;top:50%;-webkit-transform:translate3d(0,-50%,0);-moz-transform:translate3d(0,-50%,0);-ms-transform:translate3d(0,-50%,0);-o-transform:translate3d(0,-50%,0);transform:translate3d(0,-50%,0);z-index:9}.nav_right li{width:100%;height:120px;line-height:120px;position:relative}.nav_right li a{color:#6c6c6c;font-size:18px;box-sizing:border-box;width:100%;height:100%;padding-left:24px}.nav_right li:before{content:'';position:absolute;width:20px;height:1px;background:#e0e0e0;bottom:0;right:47px}.nav_right li:last-child::before{content:none}.nav_right li.on a{padding-left:0;color:#1567ce;font-size:24px}.nav_right li.on:before{width:100%;height:1px;background:#1567ce;right:0}.nav_right li.on:last-child::before{content:''}@media screen and (max-width:1550px){.part3 .part3_box .img .part3_next{right:-40px}.nav_right{width:105px}}