CSS is DOOMed!

I've build DOOM in CSS and every wall, floor, barrel, and imp is a div, positioned in 3D space using CSS transforms.

https://cssdoom.wtf

Try it out! But... not every browser can handle it. This is taking the browser to its limit. Chrome has some issues. Safari too. Bugs will be filed.

@html5test Works surprisingly smooth in Firefox.
@sjb I used Firefox as my main browser during the development of this, as it had the least rendering issues. Their CSS 3D support has been really solid.