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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 { background-color: #4CAF50; /* Green */ border: none; color: white; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; -webkit-transition-duration: 0.4s; /* Safari */ transition-duration: 0.4s; } .button1 { box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19); } .button2:hover { box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19); } </style> <h2>按钮阴影</h2> <p>我们可以使用 box-shadow 属性来为按钮添加阴影:</p> <button class="button button1">阴影按钮</button> <button class="button button2">鼠标悬停后出现阴影</button> <footer>简单教程，简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
运行结果：