.scroll-to-top {
display: none;
position: fixed; bottom: 20px; right: 20px;
width: 80px;
height: 30px;
font: bold 0.9em/1.2em Arial, Helvetica, sans-serif; color: #bbb; text-transform: uppercase; text-decoration: none;
padding: 10px;
background-color:black;
text-align:center;
opacity: 0.5;
}
.scroll-to-top:hover{
opacity: 1;	
}


.scroll-to-top:hover { text-decoration: none; }