There may be occasions when you want text to be centered in your web page or even indented.  The <center> tag is no longer used in HTML, but you can use the attribute align="center" for various HTML tags.

<p align="center">This text is centered</p>

This text is centered

Also, if you want to...

<blockquote>Indent text, you can do that by using the <blockquote> html 
tag</blockquote>

Indent text, you can do that by using the <blockquote> html tag.