<!DOCTYPE html>
<html lang="en">
<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>Document</title>
<style>
html, body {
height: 100%;
padding: 0px;
margin: 0px;
}
body * {
padding: 20px;
box-sizing: border-box;
}
.head {
height: 60px;
background-color: aqua;
position: absolute;
width: 100%;
}
.atc {
background-color: burlywood;
overflow: auto;
width: 100%;
position: absolute;
bottom: 100px;
top: 60px;
overflow: auto;
}
.left-nav {
background-color: chocolate;
float: left;
width: 200px;
height: 100%;
overflow: auto;
margin-right: 20px;
}
.sec {
background-color: darkseagreen;
overflow: auto;
/* float: left; */
/* position: absolute;
left: 240px;
right: 140px; */
height: 100%;
/* overflow: auto; */
}
.right-sec {
background-color: springgreen;
float: right;
width: 100px;
height: 100%;
/* overflow: auto; */
}
.fot {
background-color: black;
color: white;
height: 100px;
position: absolute;
width: 100px;
bottom: 0;
width: 100%;
}
.content-head {
position: sticky;
top: 0px;
}
.sec-content {
width: 100%;
overflow: auto;
}
.sec-aside {
float: right;
width: 100px;
background-color: mistyrose;
}
</style>
</head>
<body>
<header class="head">页面头部</header>
<article class="atc">
<nav class="left-nav">中间左侧导航</nav>
<section class="sec">
<div class="sec-content">
<h1>非固定头部</h1>
<h2 class="content-head">滚动到顶部时固定到顶部</h2>
<div style="height: 2000px;"></div>
</div>
<aside class="sec-aside">
内容侧行
</aside>
</section>
<!-- <section class="right-sec">中间右侧导航</section> -->
</article>
<footer class="fot">页面底部</footer>
</body>
</html>
