@keyframes pulse-border{0%{transform:translate(-50%) translateY(-50%) translateZ(0) scale(1);opacity:1}to{transform:translate(-50%) translateY(-50%) translateZ(0) scale(1.5);opacity:0}}.wtsapp:before{content:"";position:absolute;z-index:-1;left:50%;top:50%;transform:translate(-50%) translateY(-50%);display:block;width:4rem;height:4rem;background-color:#25d366;border-radius:50%;animation:pulse-border 1.5s ease-out infinite}