Hi Leo,

I don't believe you can apply CSS within a wiki via a CSS file. The CSS will only render if the CSS file itself is used under the Site's Look and Feel settings under the Admin Console or under the Project Settings.

You can however apply specific CSS code within the wiki markup as explained here:

https://www.labkey.org/home/Documentation/wiki-page.view?name=moreWikiSyntax

Regards,

Jon