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代码编辑器：
<!DOCTYPE html> <meta charset="utf-8"><link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/> <style> .button { position: relative; background-color: #4CAF50; border: none; font-size: 28px; color: #FFFFFF; padding: 20px; width: 200px; text-align: center; -webkit-transition-duration: 0.4s; /* Safari */ transition-duration: 0.4s; text-decoration: none; overflow: hidden; cursor: pointer; } .button:after { content: ""; background: #90EE90; display: block; position: absolute; padding-top: 300%; padding-left: 350%; margin-left: -20px!important; margin-top: -120%; opacity: 0; transition: all 0.8s } .button:active:after { padding: 0; margin: 0; opacity: 1; transition: 0s } </style> <h2>按钮动画 - 波纹效果</h2> <button class="button">Click Me</button> <footer>简单教程，简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
运行结果：