<!DOCTYPE html>
<html lang="en">
<head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <h1>HTML5+css入门教程</h1> <section> <h1>HTML部分</h1> <section><h2>HTML5大纲上</h2> <section><h3>关于HTML大纲</h3><p>什么是HTML5大纲.........</p></section> <section><h3>HTML大纲分析工具</h3><p>分析HTML5大纲.........</p></section> </section> <section><h2>HTML5大纲下</h2> <section><h3>显示大纲</h3><p>什么是HTML5大纲.........</p></section> <section><h3>显示编排</h3><p>分析HTML5大纲.........</p></section> </section> </section> </body> </html>
