.whatsapp {
  background: #25d366 !important;
  width: 58px;
  height: 58px;
  font-size: 0;
  transition: transform .2s ease, background .2s ease;
}

.whatsapp:hover {
  background: #1fb858 !important;
  transform: translateY(-2px);
}

.whatsapp img {
  width: 30px;
  height: 30px;
}