图标引入

<img class="icon" src="heart.svg" alt="" srcset="">

CSS代码

<style>.icon {animation:bpm 1s linear,pulse 0.75s 1s linear infinite;}@keyframes pulse {from,75%,to {transform: scale(1);}25% {transform: scale(0.9);}50% {transform: scale(1.2);}}@keyframes bpm {from {transform: scale(0);}37.5% {transform: scale(1.2);}75%,to {transform: scale(1);}}
</style>