Everything started with this post: https://news.ycombinator.com/item?id=20854214 that talks about how good is that HN wasn't redesigned since the OP was browsing it with slow connection. I though I could make HN even faster without changing the essence of the design too much. So I decided to re-do Hacker News using pure functional css (https://github.com/meerita/utilcss) and some tweaks to the code to increase the performance and test both performance gains in HN on a local server.

Code, notes and results available here https://github.com/meerita/hnredone