简单教程
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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> div+p { background-color:yellow; } </style> <h1>Welcome to My Homepage</h1> <div> <h2>My name is Donald</h2> <p>I live in Duckburg.</p> </div> <p>My best friend is Mickey.</p> <p>I will not be styled.</p> <footer>简单教程，简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
运行结果：