<!DOCTYPE html>
<html>
<head>
<title></title>
<style type="text/css">
.content
{
width: 300px
;
height: 300px
;
background-color: red
;
}
.aside
{
width: 100px
;
height: 200px
;
background-color: blue
;
float: left
;
}
.article
{
width: 200px
;
height: 200px
;
background-color: green
;
float: right
;
border: 20px solid #000
;
padding: 20px
;
box-sizing: border-box
;
box-sizing: content-box
;
}
</style>
</head>
<body>
<div class=
"content">
<div class=
"aside"></div>
<div class=
"article"></div>
</div>
</body>
</html>
