.topScroll{width:48px;height:48px;padding:0px;position:fixed;bottom:100px;right:30px;z-index:9990;display:none;background: url('../images/arrow1.jpg');}
.topScroll:hover{width:48px;height:48px;padding:0px;position:fixed;bottom:100px;right:30px;display:none;background: url('../images/arrow2.jpg');}
@media screen and (max-width:0px){.topScroll{visibility:hidden;}.topScroll:hover{visibility:hidden;}}