.scrollToTopWrapper{position:fixed;bottom:30px}.scrollToTopWrapper a{width:47px;display:block;left:-48px;position:relative}.scrollToTopWrapper a:hover{color:#000}.scrollToTopWrapper span{width:47px;height:48px;display:block;background-position:0 48px}.Black span{background-image:url(img/black.png)}.Green span{background-image:url(img/green.png)}.Orange span{background-image:url(img/orange.png)}.Black a:hover span,.Green a:hover span,.Orange a:hover span{background-position:47px 96px}