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
#div16
{7
position: relative;8
height: 200px;9
width: 200px;10
margin: 50px;11
padding:10px;12
border: 1px solid black;13
}14
15
#div216
{17
padding:50px;18
position: absolute;