The sidenotes alone are a thing of beauty and wonder. I am very much not sarcastic when I say that.
The vibe is sort of like reading beautiful little booklets, which is wonderful and non-distracting but also not very hypertexty. Their pieces don’t link among each other a ton so far as I’ve read. I wonder if it’s an intentional choice?
That is a very beautiful site. It reminds me of an old website of poems maintained by a college professor at my college. I was a student, and wasn’t sure where I wanted to go, and there was a poetic way that some of the passages would have one word that linked to an entirely different piece. I think HTML can be very beautiful and powerful if used thoughtfully.