Can you elaborate a bit on the tech-stack used for this blog? I didn't find any hints in the source (but I'm not an expert). Is it some known framework? What does the input look like (Markdown etc).?
Not the parent, but seems this is the source code for the blog. https://github.com/FrostKiwi/treasurechest
Found it by going to the comments since the comments are GitHub issues the "x comment" is a link to the issues page.
The blog is built with eleventy https://www.11ty.dev/ and as the previous reply already mentioned, the source code is on GitHub [2]. All posts are single Markdown file each with HTML inserted where I need it. The javascript for the demos is custom and changes from post to post. The basic style comes from Sakura CSS [3] with a bunch of custom stuff on top.
[1] https://www.11ty.dev/
[2] https://github.com/FrostKiwi/treasurechest
[3] https://github.com/oxalorg/sakura