Hi PenPeg, if you’re looking for something simple just to provide a visual clue that the accordion is open or closed, you could try adding character entities which are visible on most browsers.
There’s a whole host of them here – https://brajeshwar.github.io/entities/
For CSS purposes, I use “\25b2” and “\25bc” which provides up and down black triangles. It’s simple but gets the point across. Best of all, it works on mobile browsers.
