.whatsapp-button {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 84px;
  height: 84px;
  position: fixed;
  right: 23px;
  bottom: 50px;
  margin: 0 auto;
  border-radius: 50%;
  border: 1px solid #25D366;
  z-index: 10000000;
}

.whatsapp-button span {
  position:absolute;
  white-space: nowrap;
  top: -6px;
  font-weight: bold;
  left: 50%;
  transform: translateX(-50%);
  color: #08a256;
  text-align: center;
}

.whatsapp-button-link {
  display: block;
}
.whatsapp-button:before, .whatsapp-button:after {
  content: " ";
  display: block;
  position: absolute;
  border: 50%;
  border: 1px solid #25D366;
  left: -20px;
  right: -20px;
  top: -20px;
  bottom: -20px;
  border-radius: 50%;
  animation: animate-whats 1.5s linear infinite;
  opacity: 0;
  backface-visibility: hidden;
}

.whatsapp-button:after {
  animation-delay: .5s;
}

.whatsapp-button-icon {
  display: inline-block;
  width: 48px;
  height: 48px;
  background: url("img/whatsapp.png") left top no-repeat;
  background-size: contain;
}

@keyframes animate-whats {
  0% {
    transform: scale(0.5);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: scale(1.2);
    opacity: 0;
  }
}
@media (max-width:768px){
  .whatsapp-button{bottom: 30px; width:64px; height: 64px;}
  .whatsapp-button-icon{  width: 36px; height: 36px;}
}