.heart{font-size:150px;color:#e00;-webkit-animation:beat .25s infinite alternate;animation:beat .25s infinite alternate;-webkit-transform-origin:center;transform-origin:center}@-webkit-keyframes beat{to{-webkit-transform:scale(1.1);transform:scale(1.1)}}@keyframes beat{to{-webkit-transform:scale(1.1);transform:scale(1.1)}}