代码编辑器：
x
1
2
<meta charset="utf-8">3
<link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/> 4
<style>5
img6
{7
position:absolute;8
top:0px;9
}10
</style>11
<img src="/static/i/css/paris.jpg" width="95">12
<h1>This is a heading</h1>13
<footer>简单教程，简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>14