To format html text several elements are used. Now day we can do this by css style. But you can still use html element for formatting.
Text Formatting types:
<pre> Element:
<pre>
The quick brown fox jumps over the lazy dog
</pre>
<del> Element
The quick brown fox <del>jumps</del> over the lazy dog
<sup> Element
<p> The quick brown fox jumps <sup>over</sup> the lazy dog </p>
<sub> Element
<p> The quick brown fox jumps <sub>over</sub> the lazy dog </p>
<code> Element
<p> The quick brown fox jumps <code>over</code> the lazy dog </p>
<em> Element
<p> The quick brown fox jumps <em>over</em> the lazy dog </p>
<strong> Element
The quick brown fox jumps <strong>over</strong> the lazy dog
<i> Element
The quick brown fox jumps <i>over</i> the lazy dog
<b> Element
The quick brown fox jumps <b>over</b> the lazy dog
<hr> Element
<p> this is paragraph1 </p>
<hr>
<p> this is paragraph2 </p>
<br> Element
this is line 1
<br />
this is line 2
<p> Element
<p> this is paragraph1 </p>
<p> this is paragraph2 </p>
<h1> to <h6> Elements
<h1> this is heading 1 </h1>
<h2> this is heading 2 </h2>
<h3> this is heading 3 </h3>
<h4> this is heading 4 </h4>
<h5> this is heading 5 </h5>
<h6> this is heading 6 </h6>