CSS Only Room Escape Game

This is an escape game only made in CSS. I created all of the assets, using MS paint to draw the image, and Paint.net to make the background color of the PNG files into transparent. These functions are just made my many hidden checkboxes, and radio buttons. Instructions are already written the game. Please do not look on the source code, to find the clues to go outside. Keep in mind that there are concealed object in the game. I havent written it on the instructions, but basically, it has. There...