<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<meta http-equiv="X-UA-Compatible" content="ie=edge,chrome=1">
<title>flex布局</title>
<style>
/* 页脚固定在底部 */
*{
margin: 0;
padding: 0;
}
html,body{
height:100%;
}
#wrapper { height: 100%; display: flex; flex-direction: column;color:#fff;}
#header, #body, #footer { width: 100%; }
#header { flex: 0 0 auto; height:20px;background-color: red;}
#body { flex: 1 0 auto; background-color: green}
#footer { flex: 0 0 auto; background-color: blue;height:80px;line-height:80px;}
</style>
</head>
<body>
<div id="wrapper">
<div id="header">header</div>
<div id="body">body</div>
<div id="footer">footer</div>
</div>
</body>
</html>
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