#backTop{ width:20px; height:20px; padding:10px; border-radius:5px; text-indent:-9999px; cursor:pointer; z-index:999999999;	display:none;	box-sizing:content-box;	-webkit-box-sizing:content-box;}#backTop.red{	 background: url(../images/backTop-scroll/uparr-48-b.png) no-repeat center center rgba(255,255,255,0.558); 	background-size:30px;   box-shadow:0px 0px 1px #000;   }#backTop.red:hover{	 background: url(../images/backTop-scroll/uparr-48-b.png) no-repeat center center rgba(0,0,0,0.2); 	background-size:30px;   }#tabcontent{	display:none;}