<!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> <div class="big"> <div id="heart" class="left"></div> <div id="heart" class="right"></div> <div id="heart" class="bottom"></div> </div> </body> </html>