代码编辑器：
x
1
2
<meta charset="utf-8"><link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/>3
<style>4
q:lang(en)5
{6
quotes: "~" "~" "'" "'";7
}8
</style>9
<p><q lang="en">This is a <q lang="en">big</q> quote.</q></p>10
<p><b>注意:</b>当声明了!DOCTYPE 时， IE8 才支持这些属性。</p>11
<footer>简单教程，简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>12