Anyway, I'd be nice if the green/red overlay after a answer is clicked would appear above images. Currently the overlay sits below, meaning you pretty much have to have a gap between the image and the border for you to get any kind of response.
Originally I was going to remove all the gaps in the grid so the entire map looks connected, but when doing so you don't get the green response and it makes the quiz rather annoying to play.
Anyway, thanks for reading!