#nn-whatsapp-float {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  z-index: 99999;
  transition: transform 0.2s ease;
}
#nn-whatsapp-float:hover {
  transform: scale(1.08);
}
@media (max-width: 480px) {
  #nn-whatsapp-float {
    right: 14px;
    bottom: 16px;
    width: 50px;
    height: 50px;
  }
}