<!DOCTYPE html><html><head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>模拟心的跳动</title></head><style type="text/css">
* {
margin: 0;
padding: 0;}body {
background-color: #D4CECE;}.big {
width: 200px;
height: 200px;
margin: 0 auto;
position: relative;
animation: heartAnimation 0.7s linear 0s infinite;}.big #heart {
margin: 5px 0;
width: 100%;
height: 100%;
background-color: #FF0606;
position: absolute;}.left,.right {
border-radius: 100px 100px 0 0; /*左上 右上 右下 左下*/
box-shadow: 0px 0px 20px #FD0707;}.bottom {
box-shadow: 0px 0px 20px #FD0707;}.left {
transform: translate(-50px,150px) rotate(-45deg); /*translate()位移 rotate() 旋转角度*/}.right {
transform: translate(50px,150px) rotate(45deg);}.bottom {
transform: translate(0,214px) rotate(45deg) scale(.9,.9) /*scale:定义 2D 缩放转换。*/}/*动画效果*/@keyframes heartAnimation{
form {
transform: scale(0.9,0.9);
}
to {
transform: scale(1.1,1.1);
}}</style><body>
<p class="big">
<p id="heart" class="left"></p>
<p id="heart" class="right"></p>
<p id="heart" class="bottom"></p>
</p>
</body>
</html>