.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #25d366;
  color: #fff;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  text-align: center;
  line-height: 60px;
  font-size: 34px;
  z-index: 9999;
}

.whatsapp-float:hover {
  transform: scale(1.1);
}