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>