Looks promising, but the web site keeps promoting this as "Pure HTML and CSS." But it's actually all run on JS. So, not actually pure HTML and CSS.

The video didn't work on my machine. It goes as far as "How does it work?" and then it's just random dots all over the page.

And the last straw was the pop-up asking me if I want more information when I'd only been on the page for five seconds. How do I know if I want more information if I haven't had a chance to look at the page yet?

Usually I lump these into "yet another JS library to throw on the fire." But this one seems a little different. We'll see.