#page-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1;
  z-index: 99;

}

#page-top a {
  background: #72c7ca;
  text-decoration: none;
  color: #fff;
  width: 80px;
  height: 80px;
  padding: 28px 5px 20px;
  text-align: center;
  display: block;
  border-radius: 40px;
  opacity: 0.9;
  transition: all 0.3s ease;

}

#page-top a:hover {
  text-decoration: none;
  opacity: 0.5;
}