.button-play>span:first-child{animation-duration:3s;animation-iteration-count:infinite;animation-name:expand;animation-play-state:running}.button-play:hover>span:first-child{transform:scale(1.1)}@keyframes expand{0%{box-shadow:0 0 #fff3}40%{box-shadow:0 0 0 8px #fff3}80%{box-shadow:0 0 #fff3}to{box-shadow:0 0 #fff3}}