.pagetop {
  display: none;
  position: fixed;
  bottom: 30px;
  right: 15px;
  z-index: 998;
}

.pagetop a {
  display: block;
  background-color: #ccc;
  text-align: center;
  color: #222;
  font-size: 30px;
  text-decoration: none;
  padding: 5px 10px;
  filter: alpha(opacity=50);
  -moz-opacity: 0.5;
  opacity: 0.5;
}