If you want to include CSS inside a HTML tag, you can use the STYLE attribute as <TAG STYLE="css_definition" ...>. Of course, the CSS definition will only apply to this instance of this tag. The following tutorial exercise shows you how to set background to gray on a <PRE> tag:

<p>Map of commonly used colors:</p>

<pre style="background-color: gray">

black #000000

white #ffffff

gray #7f7f7f

red #ff0000

green #00ff00

blue #0000ff

</pre>