The 'difficulty' screen and the gameboard screen have buttons right on the bottom edge of the mobile display, which is not optimal for reaching the button.
This should be improved with more space to the bottom of the body (either padding or margin) to allow for better button targeting and better layout optics.


The 'difficulty' screen and the gameboard screen have buttons right on the bottom edge of the mobile display, which is not optimal for reaching the button.
This should be improved with more space to the bottom of the body (either padding or margin) to allow for better button targeting and better layout optics.