Board Thread:General Discussion/@comment-26299292-20140610005949/@comment-856287-20140630161428

Assuming it's the same across all Wikia wikis (except where a wiki has applied custom fonts via CSS), it's: body { font-family: Helvetica, Arial, sans-serif; } (so, preferably use Helvetica, but failing that, use Arial, and failing that, use any sans-serif font as selected by the browser).

You can investigate these things by using the web inspector included in Safari, Chrome, and Firefox. You would right-click the element whose font you wish to check, then click "Inspect Element." The resulting inspection panel will show you all the styles being applied, including "font-family." You can also view the "computed" results of the code, showing you what is actually being done (for example, hex colors will be translated into RGB, and percent sizes will be shown as actual pixel sizes).