.d2k-whatsapp-button {
  position: fixed;
  z-index: 999999;
  width: 64px;
  height: 64px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #25D366;
  box-shadow: 0 4px 14px rgba(0,0,0,.25);
  transition: transform .12s ease-in-out;
}
.d2k-whatsapp-button:hover { transform: scale(1.06); }
.d2k-whatsapp-button img { width: 34px; height: 34px; }
@media (min-width: 782px) {
  .d2k-whatsapp-button.hide-desktop { display: none !important; }
}
@media (max-width: 781.98px) {
  .d2k-whatsapp-button.hide-mobile { display: none !important; }
}