/* scroll to top */
#toTop {
  position: fixed;
  -webkit-border-radius: 3px;
  -moz-border-radius: 3px;
  border-radius: 3px;
  background: var(--green);
  opacity: 0.4;
  filter: alpha(opacity=40);
  width: 40px;
  height: 40px;
  bottom: 5px;
  right: 5px;
  cursor: pointer;
  color: var(--white);
  font-size: 23px;
  text-align: center;
  display: none;
  padding: 6px 0 0 2px;
  border-radius: 100px;
  z-index: 14;
}
#toTop:hover {
  opacity: 1;
  filter: alpha(opacity=100);
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  -o-transition: all 0.3s;
  -ms-transition: all 0.3s;
  transition: all 0.3s;
}