.back-to-top {
 
background: none;
 
margin: 0;
 
position: fixed;
 
bottom: 50px;
 
right: 50px;
 
width: 55px;
 
height: 55px;
 
z-index: 100;
 
display: none;
 
text-decoration: none;
 
color: #ffffff;
 
background-color: #eccf8d;
opacity: .5;
 
}
.back-to-top:hover {
opacity: 1;
}
 
  
 
.back-to-top i {
 
  font-size: 60px;
 
}