Quaxio is a personal blog of programming curiosities, including a CSS-only digital clock, a bootable retro game, and a QR code quine.
HN links it for the pure CSS digital clock as prior art, its puzzles, and other hacks like a Cromemco Dazzler emulator.
I had a Cromemco Dazzler (still have it). Nifty graphics board for the S-100 bus. Uses DMA off system memory. Here are some links to further info. (PDF's)
Manual:
https://www.quaxio.com/files/2020/kaleidoscope_part1/cromemco_dazzler_manual.pdf
Someone cloned one:
https://www.worldphaco.com/uploads/THE_WORLD_FAMOUS_CROMEMCO_DAZZLER.pdf
Prior art (I'm sure there are earlier ones):
https://www.quaxio.com/pure_css_digital_clock.html
CSS only digital clock "best viewed at noon or midnight". Discussed at https://news.ycombinator.com/item?id=25595439
Of course this one is no different and can't tell the current time.
From: http://quaxio.com/triple/
^([0369]|[258][0369]*[147]|[147]([0369]|[147][0369]*[258])*[258]|[258][0369]*[258]([0369]|[147][0369]*[258])*[258]|[147]([0369]|[147][0369]*[258])*[147][0369]*[147]|[258][0369]*[258]([0369]|[147][0369]*[258])*[147][0369]*[147])*$
Your quote chopped off the asterisk after HTML. See "Unfrequently Asked Questions" for explanation of the asterisk:
view-source:https://www.quaxio.com/pure_css_digital_clock.css
Yes, they are copyrighted. The link to article points to this equivalent, free ECMA 119 standard: https://www.quaxio.com/files/2018/bootable_cd_retro_game_tweet/ecma-119.pdf
The write-up for day 1 is seriously cool: https://www.quaxio.com/bootable_cd_retro_game_tweet
Edit: previously on HN at https://news.ycombinator.com/item?id=17656299