#page-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  font-size: 80%;
}

#page-top a {
  display: block;
  background: #666;
  color: #fff;
  width: 100px;
  padding: 25px 0;
  text-align: center;
  text-decoration: none;
  border-radius: 10px;
}

#page-top a:hover {
  background: #999;
  text-decoration: none;
}