简单教程
提交运行
代码编辑器：
<!DOCTYPE html> <meta charset="utf-8"> <link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/> <style> [class^="test"] { background:#ffff00; } </style> <div class="first_test">The first div element.</div> <div class="second">The second div element.</div> <div class="test">The third div element.</div> <p class="test">This is some text in a paragraph.</p> <footer>简单教程，简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
运行结果：