.whatsapp-button img {
  width: 50px;
  background: transparent;
  margin-bottom: -4px;
}

.whatsapp-button {
  position: fixed;
  bottom: 15px;
  right: 15px;
  text-align: center;
  z-index: 100;
  cursor: pointer;
}

.whatsapp-button::before,
.whatsapp-button::after {
  content: " ";
  display: block;
  position: absolute;
  border-radius: 50%;
  left: -10px;
  right: -10px;
  top: -8px;
  bottom: -10px;
  border: 15px solid #53ce5f50;
  animation: pulse 1.5s linear infinite;
}

@keyframes pulse {
  0% {
    transform: scale(0.5);
    opacity: 0;
  }

  50% {
    opacity: 0.8;
  }

  100% {
    transform: scale(1.1);
    opacity: 0;
  }
}