Thanks! Its code is available at https://github.com/aliceisjustplaying/whtwnd-blog, I intend to turn this into the template as the posts are stored on my PDS, on ATProto, using WhtWnd https://whtwnd.com/

(And all of this is a fork of my friend's Samuel's blog, https://mozzius.dev, see https://github.com/mozzius/mozzius.dev)