html——排版

<h1>~<h6>

标题1~标题6

<h1>this is h1</h1><h2>this is h2</h2><h3>this is h3</h3><h4>this is h4</h4><h5>this is h5</h5><h6>this is h6</h6>

<hr>

水平线

<hr>

<br>

换行

line 1<br>line 2<br>line 3<br>

<p>

段落

<p>paragraph 1</p><p>paragraph 2</p><p>paragraph 3</p>

<div>

节，换行

<div>div 1</div><div>div 2</div><div>div 3</div>

<span>

节，不换行

<span>span 1</span><span>span 2</span><span>span 3</span>