Beamer set custom fonts but not used?

Question

I am trying to make a template for my work at Uni. I have set the fonts like so:

\setmainfont[
    Path           = uni/fonts/,
    Extension      = .otf,
    Ligatures      = TeX,
    BoldFont       = Uni-Bold,
    ItalicFont     = Uni-Italic,
    BoldItalicFont = Uni-BoldItalic
]{Uni-Roman} % there is a file called uni/fonts/Uni-Roman.otf

I do not set the fonts elsewhere. However, beamer does not use these fonts. What am I doing wrong? Yes, I import the .sty file.

Answer 1

Beamer uses sans serif font by default. So you'll need to use \setsansfont instead of \setmainfont

% !TeX TS-program = lualatex
\documentclass{beamer}
\usepackage{fontspec}
\setsansfont{Arial}
\begin{document}
\begin{frame}
  test
\end{frame}
\end{document}