I've been trying to edit the CSS by using the one I made for another app but I couldn't figure out where to place it for it to get used. I've added the code to Mendix\PROJECT\theme\styles\css\custom in custom.css but that keeps getting overridden by the theme.
So now I'm editing the same file inside the theme.zip file I downloaded but that seems like a very roundabout way of doing it. I've tried following the video on the Mendix Youtube page: https://www.youtube.com/watch?v=7m7L7cUXgOQ and https://docs.mendix.com/howto6/setup-mendix-ui-framework-with-just-css but the video is outdated and the docs page points me to the file that changes nothing. Should I rather follow this guide: https://docs.mendix.com/howto50/setup-mendix-ui-framework
Where am I going wrong?