#go-top {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
}
#go-top .sstt-icon {
  font-size: 20px;
  border-radius: 5px;
  width: 20px;
  height: 20px;
  padding: 12px;
  line-height: 45px;
  text-align: center;
  cursor: pointer;
  background-color: #000000;
  color: #ffffff;
  transition: .4s ease-in-out;
}
#go-top .sstt-icon:hover {
  transform: translateY(-6px);
}