Check out example codes for "how to italicize in html". It will help you in understanding the concepts better.

Code Example 1

<!--
	You have 2 options
-->
<i>This text is the original italic</i>
<em>This is actually emphasising a phrase, but will do just the same</em>

Code Example 2

<i>this is italic</i>

Code Example 3

<html>
 <head>
   <title>Italic Text</title>
 </head>
 <body> 
   <p>Use the em element to <em>indicates emphasized</em> content.</p>
 </body>
</html>

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