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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; border: none; color: white; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; } </style> <h2>CSS 按钮</h2> <button>默认按钮</button> <a href="#" class="button">链接按钮</a> <button class="button">按钮</button> <input type="button" class="button" value="输入框按钮"> <footer>简单教程，简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
运行结果：