<!DOCTYPE HTML>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie-edge">
<title>布局练习</title>
<style>
html,body,header,main,footer{
padding: 0;
margin: 0;
}
html,body{
height: 100%;
}
body{
display: flex;
flex-direction: column;
}
header{
flex: 0 0 60px;
background-color:#111;
}
footer{
flex: 0 0 40px;
background-color:#222;
}
main{
flex: 1;
display: flex;
}
nav,aside{
flex: 0 0 150px;
}
section{
flex: 1;
background-color: #ccc;
display: flex;
justify-content: center;
align-items: center;
}
.box{
width: 100px;
height: 100px;
background-color: red;
}
</style>
</head>
<body>
<header></header>
<main>
<nav></nav>
<section>
<div class="box"></div>
</section>
<aside></aside>
</main>
<footer></footer>
</body>
</html>