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+<!DOCTYPE html>
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+<html lang="en">
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+<head>
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+ <meta charset="UTF-8">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+ <style>
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+ .box{
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+ width: 200px;
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+ height: 200px;
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+ background-color: red;
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+ font-size: 100px;
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+ text-align: center;
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+ line-height: 200px;
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+ color: #fff;
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+ font-weight: bold;
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+ position: absolute;
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+ top:0;
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+ left:0;
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+ /* 动画 animation */
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+ /* animation 后面的参数为 动画名称 动画时间 动画曲线 动画延迟 动画次数 动画结束状态 (forwards 保持最后帧) */
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+ /* animation: move 1s linear 2s 2 forwards ; */
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+ /* 动画名称 用来定义动画关键帧(动画名称) */
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+ animation-name: move;
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+ /* 动画时间 用来定义动画的持续时间 */
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+ animation-duration: 1s;
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+ /* 动画曲线 用来定义动画的运动轨迹 */
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+ animation-timing-function: linear;
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+ /* 动画延迟 用来定义动画的延迟时间 */
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+ animation-delay: 2s;
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+ /* 动画次数 用来定义动画的次数 infinite 无限循环 */
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+ animation-iteration-count: infinite;
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+ /* 动画结束状态 用来定义动画的结束状态 */
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+ animation-fill-mode: forwards;
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+
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+ }
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+ /* @keyframes 用来定义动画关键帧(动画名称) */
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+ /* 这里动画名称可以任意起名字 */
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+ /* 动画关键帧 用来定义动画的运动轨迹 */
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+ /* 这里from和to是开始和结束 */
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+
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+ @keyframes move{
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+ /* from{
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+ left:0;
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+ }
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+
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+ to{
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+ left:200px;
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+ } */
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+
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+ 0%{
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+ left:0;
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+ }
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+ 50%{
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+ left:100px;
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+ }
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+ 100%{
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+ top:100px;
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+ background-color: blue;
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+ }
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+ }
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+ .box:hover{
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+ animation-play-state: paused;
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+ }
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+ </style>
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+</head>
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+<body>
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+ <div class="box">
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+ 中
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+ </div>
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+</body>
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+</html>
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