As @samir noted, today's the Naked CSS Day:
https://css-naked-day.org/
So I adjusted my bloggo:
https://rys.io/
(if you had visited before, might need to hard-reload)
Websites can and should look ok and remain functional without styling. For a lot of people, that's how they experience the web – be it because they use screen readers, or console browsers that help them avoid surveillance capitalism, or just because that's their preference.