.center{display:flex}.back{position:fixed;padding:0;margin:0;top:0;left:0;width:100%;height:100%;background:#fff;animation-name:backdiv;animation-duration:1s;animation-iteration-count:infinite}.heart{margin:auto;right:0;bottom:0;left:0;transform:rotate(-45deg);animation-name:beat;animation-duration:1s;animation-iteration-count:infinite}.heart,.heart:after{position:absolute;top:0;background-color:pink;height:50px;width:50px}.heart:after{left:25px}.heart:after,.heart:before{content:"";border-radius:50%}.heart:before{background-color:pink;position:absolute;width:50px;height:50px;top:-25px;left:0}@keyframes backdiv{50%{background:#ffe6f2}}@keyframes beat{0%{transform:scale(1) rotate(-45deg)}50%{transform:scale(.6) rotate(-45deg)}}