css3动画
动画:{ 关键帧:@keyframe, 动画:animation(必填 动画名 动画时长) } animation:name duration timing-funtion delay iteration-count(播放次数 n|infinite) direction(逆向播放 alternate) play-state(running or paused) fill-mode(动画外状态) @keyframe { from {} (百分比规定发生动画的时间)to{} } <style> .box{ width: 200px; height: 400px; position: relative; } .box > div{ position: absolute; width: 100px; height: 100px; animation: move 5s linear infinite alternate; } @keyframes move { 0% { background-color: red; top: 0px; left: 0px; } 25% { background-color: yellow; top: 0px; left: 200px; } 50% { background-color: blue; top: 400px; left: 200px; } 75%