.whatsapp-float {
  position: fixed;
  bottom: 70px;
  right: 10px;
  width: 50px;
  height: 50px;
  background-color: #25D366;
  color: #fff;
  border-radius: 50%;
  text-align: center;
  font-size: 26px;
  line-height: 50px;
  z-index: 9999;
  box-shadow: 0 4px 10px rgba(0,0,0,0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
}
.whatsapp-float,
.whatsapp-float:visited,
.whatsapp-float:hover,
.whatsapp-float:active,
.whatsapp-float:focus {
  color: #fff !important;
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 16px rgba(0,0,0,0.35);
  color: #fff;
}
@media (max-width: 768px) {
  .whatsapp-float {
    bottom: 15px;
    right: 15px;
  }
}