html 代码初学
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>第一节</title>
</head>
<body>
<h1> <!--注释-->
<p><!-- 段落 -->
x<sup>2</sup>+y<sub>2</sub>
</p>
<a name="a">跳转到底部</a>
<big></big>
<!-- 块状元素 --><div>
</div>
<!-- 内联元素 -->
<span></span>
<a href="http://www.baidu.com/" target="_blank">百度</a>
<a href="a.html" target="_self">a.html</a>
<p><a href="#a">ss</a></p>
<img src="b/1.jpg" alt="错误">
</h1>
<ol type="I">
<li>j
<ol>
<li>55566</li>
</ol>
</li>
<li>5</li>
</ol>
<ul type="square">
<li>55</li>
<li>222</li>
</ul>
<dl>
td\\\\777\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
</dl>
<table border="2"cellpadding="0">
<td>1</td>
<td>2</td>
<td>2</td>
</table>
<table border="2">
<td> </td>
<td><table>
</table>
</td>
<td> </td>
</table>
</body>
</html>
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