.whatsapp-button{position:fixed;top:50%;right:0;border-radius:50px;text-align:center;box-shadow:2px 2px 6px rgba(0,0,0,.4);z-index:900;transition:.3s;width:80px;height:80px;background-color:#25d366}.whatsapp-button:hover{transform:scale(1.1);box-shadow:4px 4px 12px rgba(0,0,0,.5)}.whatsapp-button img{width:80px;margin-top:0;position:relative;z-index:1}.whatsapp-button::before{content:"";position:absolute;z-index:0;left:0;top:0;width:100%;height:100%;background-color:#25d366;border-radius:50%;animation:1.5s ease-in-out infinite heartbeat-animation;opacity:0}@keyframes heartbeat-animation{0%,100%,50%{transform:scale(.9);opacity:0}25%{transform:scale(1.2);opacity:.7}75%{transform:scale(1.4);opacity:.5}}