<!DOCTYPE html>
<html>
<head>
<!-- 防止中文乱码 -->
<meta charset="utf-8">
<title> this is a title </title>
</head>
<body>
<!-- 标题 由h1到h6 依次变小-->
<h1>this is a h1</h1>
<h2>this is h2</h2>
<!-- 段落 -->
<!-- br 换行标签 -->
<p>this is a p<br> use br </p>
<strong>加粗</strong>
<b>加粗</b>
<em>倾斜</em>
<i>倾斜</i>
<del>删除线</del>
<s>删除线</s>
<ins>下划线</ins>
<u>下划线</u>
<hr /><!-- 水平线 -->
<!-- 连接 -->
<a href="https://www.baidu.com">this is a href</a>
<!-- 图像 -->
<img src="C:\Users\Desktop\HTML/img1.jpg"
width="250" height="250"/>
<!--div独占一行-->
<div>head</div>
<p>222</p>
<!--span,一行多个span-->
<span>www</span>
<span>hhh</span>
</body>
</html>