HTML_001_语义化结构元素 -

元素标签与属性
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta
      name="viewport"
      content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"
    />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>元素标签与属性</title>
    <link rel="stylesheet" href="css/demo1.css" />
  </head>
  <body>
    <!-- 页眉 -->
    <header>
      <h1>&lt;header&gt;</h1>
    </header>
    <div class="container">
      <!-- 边栏 -->
      <aside>
        <h1>&lt;aside&gt;</h1>
      </aside>
      <main>
        <h1>&lt;main&gt;</h1>
        <div>
          <section>
            <h1>&lt;section1&gt;</h1>
          </section>
          <section>
            <h1>&lt;section2&gt;</h1>
          </section>
        </div>
      </main>
    </div>
    <footer>
      <h1>&lt;footer&gt;</h1>
    </footer>
  </body>
</html>