Board Thread:Support Requests - Designing Your Wiki/@comment-34143498-20200714010014/@comment-26611127-20200714043854

Are you referring to article headings or individual tab labels?

Assuming you mean individual tab labels, you can use CSS to change their fonts:

Also, many of the fonts on the website you linked are not default fonts available on Fandom. If you want a custom font on your wiki, you can import it via CSS (Help:How to import Google Fonts). If you have a font file that you want to upload onto your wiki (most likely .TTF), you can to enable TTF file support.