#backTop{width:35px;height:35px;padding:5px;border-radius:10px;text-indent:-9999px;cursor:pointer;z-index:999999999;display:none;box-sizing:content-box;-webkit-box-sizing:content-box;}
#backTop.green{background:url(../images/uparr-48-b.png) no-repeat center center rgba(122, 192, 34, 0.9);}