The site uses JavaScript to render the Markdown to HTML client-side. Reminds me of when I thought XML with client-side XSLT for rendering was a good idea, lol.
I enjoyed the plain markdown page though, very readable.
I see, I've set my browser to block third party javascript, on inspection, it seems the author has decided to download the markdown render script from what looks to be an analytics firm.
(https://casual-effects.com/markdeep/latest/markdeep.min.js)
I enjoyed the plain markdown page though, very readable.