Can a 3D Minecraft implementation be done entirely in CSS and HTML, without a single line of JavaScript in sight? The answer ...

MineSweeper implemented in CSS + HTML using the Space Toggle trick (no JavaScript!) - propjockey/css-sweeper ...

Be sure to configure your CSS files' caching properly so that this re-request doesn't actually go to the server, hitting your browser cache instead. From there, each media query block is appended to ...