按照实验任务逐个描述实验代码（核心代码或流程图均可）和运行结果
1. 实验代码：
<html>
<head>
<title>Example</title>
</head>
<body bgcolor="#00DDFF">
<H1><B><I><FONT COLOR=#FF00FF">
<MARQUEE BGCOLOR="#FFFF00" direction="left"
behavior="alternate">welcome to you</MARQUEE>
</FONT></I></B></H1>
<hr>
<h2 align="center">
<font color="#0000FF">A simple HTMLdocument</font>
</h2>
<em>Welcome to the worldof HTML</em>
<p>This is a simple HTML document.It is to give you an outline
of how to write HTML file and how the <b>markup tags</b> work in the
<I>HTML</I>file</p>
<p>following is three chapters
<ul>
<li>This is athe chapter one</li>
<li><A href="#item">This is the chapter two</A></li>
<li>This is the chapter three</li>
</ul>
</p>
<hr>
<p><a href="item">following is items of the chapter
two</a></p>
<table border="2" bgcolor="gray" width="40%">
<tr>
<th>item</th>
<th>content</th>
</tr>
<tr>
<td> item 1</td>
<td>font</td>
</tr>
<tr>
<td>item 2</td>
