Page specific CSS

The font color on this page is red. But, if you look at other pages here on my test wiki, you'll notice the font color is not red on those pages.

Question: Why is the font red only on this particular page?

Answer: Normally, if you were to use this CSS: it would make the font red on every page.

But, the &lt;body&gt; tag has a unique CSS class that uniquely identifies a single page. You can use this to write CSS that only applies to a single page: