.whatsapp-float {
  position: fixed;
  bottom: 190px;
  right: 45px;
  z-index: 100;
  background-color: #25d366;
  padding: 10px;
  border-radius: 50%;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}
.whatsapp-float img {
  width: 28px;
  height: 28px;
}
.whatsapp-float:hover {
  background-color: #00c548;
}