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天蓬老师Correction status：qualified
Teacher's comments：很有创意
Collection
Collection
html代码如下：
```html
<!DOCTYPE html><html lang="">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>vw,vh实现手机端布局</title>
</head>
<style>
body {
margin: 0px;
}
.box1 {
width: 80vw;
height: 20vh;
background-color: darkgoldenrod;
}.box2 {width: 80vw;height: 60vh;background-color: darkorchid;}.box3 {width: 80vw;height: 20vh;background-color: darkred;}.center {margin: auto;border-radius: 0.5em;font: bold 2rem "微软雅黑";text-align: center;}
</style>
<body>
<div class="box1 center">头部区</div>
<div class="box2 center">内容区</div>
<div class="box3 center">尾部区</div>
</body>
</html>
```