纯css布局，底部footer，页面保持最小一屏 align-self: flex-end
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<style>
* {
padding: 0;
margin: 0;
}
html, body {
height: 100%;
}
div {
border: 1px solid #000;
box-sizing: border-box;
}
.box {
display: flex;
flex-wrap: wrap;
min-height: 100%;
width: 100%;
align-items: flex-start;
}
.box div {
width: 100%;
}
.content {
height: 100px;
}
.bottom {
align-self: flex-end;
height: 100px;
}
</style>
<body>
<div class="box">
<div class="header">
<div class="content">content</div>
<div class="content">content</div>
<div class="content">content</div>
<div class="content">content</div>
<!-- <div class="content">content</div>
<div class="content">content</div>
<div class="content">content</div>
<div class="content">content</div>
<div class="content">content</div>
<div class="content">content</div>
<div class="content">content</div>
<div class="content">content</div>
<div class="content">content</div>
<div class="content">content</div>
<div class="content">content</div> -->
</div>
<div class="bottom">footer</div>
</div>
</body>
</html>
