I uploaded a stylesheet but nothing worked. Finally after clicking waiting clicking waiting (x1,000) I realised that the only custom CSS that worked was that applied to html tag elements (p,h1,h2, etc). Custom classes don't work, and IDs cannot be set. Is there any way to get around these limitations?
For example, what if I want to use CSS grids?
For some reason classes are now working(!)
Now to work on some JS via another single file upload.