<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>文档标题</title>
</head>

    <body>
        <!--注释-->

        <h1><!-- Header --></h1>

        <p>     <!-- Paragraph -->
            <br>换行    <!-- Break -->
            <hr>水平线
            <strong>加粗</strong>
            <em>强调</em>   <!-- Emphasized -->
            <i>斜体</i>     <!-- Italic -->
            <a href = "https://cn.bing.com/" target = "_blank">
                超链接（在新标签页打开）
            </a>    <!-- Anchor -->
        </p>


       <ul>     <!--无序列表 Unordered List-->
           <li>列表项1</li>     <!-- List Item -->
           <li>列表项2</li>
           <li>列表项3</li>
       </ul>

       <ol>     <!-- 有序列表 Ordered List-->
       </ol>


       <table>      <!-- 表格 -->
            <thead>
                <tr>    <!-- table row -->                
                    <th>表头1</th>      <!-- table header cell -->              
                    <th>表头2</th>
                </tr>
            </thead>

            <tbody>
                <tr>
                    <td>单元格1</td>   <!-- table data cell -->
                    <td>单元格2</td>        
                </tr>
            </tbody>
       </table>

       <form>
            <input type ="">
                text password radio checkbox submit 

            <label for =" 和input的id相同"></label>

            <select>
                <option></option>
            </select>

       </form>

    </body>
</html>