老师，作业审批下

来源：3-3 编程练习

web前端高级开发工程师

2021-07-27 21:29:02

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
   <title>3-1 大纲标签</title>
</head>
<body>
   
   <header>
        <div class="logo">logo</div>
        <nav>导航</nav>
   </header>

   
   <main>
        <article>文章</article>
   </main>

   
   <footer>尾部</footer>
</body>
</html>