.mysitefaster-whatsapp {
    position: fixed;
    bottom: 50%;
    right: 0px;
    margin: 15px;
    z-index: 9999;
}

.mysitefaster-whatsapp img {
    width: 50px;
    height: 50px;
    animation: zoom-in-zoom-out 1s ease infinite;

}

.mysitefaster-whatsapp:hover {
    transition: .2s;
    transform: scale(1.20);
}

@keyframes zoom-in-zoom-out {
  0% {
    scale: 100%;
  }
  50% {
    scale: 120%;
  }
  100% {
    scale: 100%;
  }
}