html+css实战11-换行和水平线标签_css

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>基本骨架</title>
</head>
<body>
    <!-- 基本骨架 -->
    <!-- 我是代码注释 -->
    <h1>我是一级标题</h1>
    <h2>我是二级标题</h2>
    <h3>我是三级标题</h3>
    <h4>我是四级标题</h4>
    <h5>我是五级标题</h5>
    <h6>我是六级标题</h6>
    <p>我是<hr/>歌<br/>谣</p>
</body>
</html>

html+css实战11-换行和水平线标签_html_02