<!DOCTYPE html>标签：12,网页,22,HTML,2022,结构 From： https://www.cnblogs.com/RUI2022/p/16998495.html
<html lang="en">
<head>
<meta charset="UTF-8">
<title>页面结构分析</title>
</head>
<body>
<header><h2>网页头部<h2></header>
<section><h2>网页主体</h2></section>
<footer><h2>网页脚部</h2></footer>
</body>
</html>