Hello everyone! I'm running a small project, it's a memory game. My idea was to create a div (which is the letter) and within that div put two other divs (which are the front and back of the letter). But when I stylize the front and back I can not get these elements overlapping. What I wanted to do is to leave the front superimposed on the back, so when the user clicked I would change the front display to 'none', so the image would appear.
The full source code is here: link