[kmoser]

What am I missing? I don't see anything except the scroll bar itself, on both Firefox and Chrome. Do my custom scroll bar colors have something to do with it?

[Mashimo]

Do you a have reduce motion set in your OS? That preference is respected and the guy is disabled.

[kmoser]

Yep, that was it. It would have been nice if the page detected the reduced motion setting and displayed a message indicating why the demo wouldn't work in that case.

[EA]

Perhaps because of this: https://news.ycombinator.com/item?id=43237747

[mrgoldenbrown]

I don't see it on Android Firefox or Android chrome. I see it on windows chrome.

[AHASIC]

Same for me, nothing happens.