#backtotop{background:#f7f7f7;border:1px solid #ccc;border-radius:5px;bottom:10px;color:#333;cursor:pointer;display:none;height:30px;line-height:30px;padding:5px 10px;position:fixed;right:10px;text-align:center;z-index:1;-moz-border-radius:5px;-webkit-border-radius:5px}#backtotop:hover{background:#eee}.i18n-cn #backtotop{z-index:9999991}