Goal:
Fix the footer area at the bottom. No matter how wide the page is, it will always be at the bottom, just like the menu on the mobile side.
(Recommended tutorial: CSS introductory tutorial)
Example:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>document</title>
<!-- css -->
<style>
#demo{
position: fixed;
left: 0px;
bottom: 0px;
width: 100%;
height: 50px;
background-color: #eee;
z-index: 9999;
}
</style>
</head>
<body>
<footer id="demo">我是footer</footer>
</body>
</html>Recommended related video tutorial: css video tutorial
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