Fixed positioning means positioning relative to the browser window. How the page scrolls, the position of this box does not change.
Fixed positioning away from the standard flow.
Purpose:
1. The css code of the top navigation bar:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>固定定位</title>
<style>
*{
margin: 0;
padding: 0;
}
body{
padding-top: 60px;
}
.nav{
position: fixed;
left: 0;
top: 0;
width: 100%;
height: 60px;
background: #1c8de0;
}
.inner_c{
width: 1000px;
height: 60px;
margin: 0 auto;
}
.inner_c ul{
list-style: none;
}
.inner_c ul li {
float: left;
width: 100px;
height: 60px;
line-height: 60px;
text-align: center;
color: #fff;
}
</style>
</head>
<body>
<div class="nav">
<div class="inner_c">
<ul>
<li>网页栏目</li>
<li>网页栏目</li>
<li>网页栏目</li>
<li>网页栏目</li>
<li>网页栏目</li>
<li>网页栏目</li>
<li>网页栏目</li>
<li>网页栏目</li>
<li>网页栏目</li>
<li>网页栏目</li>
</ul>
</div>
</div>
</body>
</html>
Note: IE6 is not compatible with fixed positioning