.topbar{text-align:center;height:40px;line-height:40px;background:rgba(17,17,17,0.7);width:100%;z-index:999}.topbar .list-inline li{margin-right:15px}.topbar span{color:#999}header nav{z-index:9;top:60px;width:100%;background:rgba(242,242,242,0)}header nav .bg-menu{background:#ffffffa3;position:relative}