前端CSS3动画实现爱心特效的代码

<divclass="heart">
  <divclass="heart-inner"></div>
</div>
.heart {
position: relative;
width: 50px;
height: 50px;
}
.heart:before,
.heart:after {
content: "";
position: absolute;
top: 0;
left: 25px;
width: 25px;
height: 40px;
background-color: red;
border-radius: 25px25px00;
transform: rotate(-45deg);
transform-origin: 0100%;
}
.heart:after {
left: 0;
transform: rotate(45deg);
transform-origin: 100%100%;
}
.heart-inner {
position: absolute;
top: 10px;
left: 10px;
width: 30px;
height: 30px;
background-color: red;
border-radius: 15px;
animation: heartbeat1sease-in-outinfinite;
}
@keyframesheartbeat {
0% {
transform: scale(1);
  }
25% {
transform: scale(0.75);
  }
50% {
transform: scale(1);
  }
}