so you’re invented a scroll bar? Or did you break the scroll bar with some other CSS trick?

What is actually the attraction of reading progress indicators on webpages?

I get that it's fun to do active things with CSS instead of javascript, sure.

But aside from goofing off and/or tech demos -- is there a target audience who is excited and happy to have a progress bar on their pages and misses it when absent? I've been seeing this feature frequently and for me it's kind of annoying.

Interesting experiment. Didn't know CSS could do that.