.pagetop {
  cursor: pointer;
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 80px;
  height: 80px;
  background: url(/assets/images/pagetop.png) no-repeat;
  transition: opacity 0.3s;
  -webkit-transition: opacity 0.3s;
  -ms-transition: opacity 0.3s;
  -moz-transition: opacity 0.3s;
  -o-transition: opacity 0.3s; }

.pagetop:hover {
  opacity: 0.8; }