#scrolltotop {
position: fixed;
bottom: 0px;
right: 0px;
}
#scrolltotop span {
width: 48px;
height: 48px;
display: block;
background: url("../img/top.png") top no-repeat;
margin: 0px 15px 10px 0;
border-radius: 3px;
-webkit-transition: all 0.2s ease-out;
-moz-transition: all 0.2s ease-out;
-o-transition: all 0.2s ease-out;
-ms-transition: all 0.2s ease-out;
transition: all 0.2s ease-out;
}
#scrolltotop a:hover span { background: url("../img/top.png") bottom no-repeat }