I'm the OP for post [0], and I feel the need to explain myself: I made that fold-in 2 days ago just for fun, but then it became a timely joke. So, I scrambled very quickly to throw it into an HTML page with basic CSS so I could post to HN.

I don't have any CSS media queries to make it better on the desktop, but I'm going to copy Thomas Park's CSS to make it more usable in the future. Thanks for the critique!