Thread:Project:Support desk/Controlling how a page's Categories appear on the page

When I go to Wikipedia or this wiki, the list of categories at the bottom of a page is in a single line. For example: Categories: Foo | Bar | Baz

But on my own mediawiki, categories appear as a bulleted list: Categories:
 * Foo
 * Bar
 * Baz

I would much prefer the single-line display style. The bulleted format doesn't work for me. How do I get single-line category display?

I assume it's related to the wiki skin and/or modifying the CSS, but I can't figure out where to change this, or what to search for. I notice that the Vector skin puts the categories in a single line, but I don't want to use Vector.

How do I accomplish single-line category display? Thanks!