What scroll does trello use?

Question

Layout

Trello does not have a standard scroll, but its own. Same thing with Telegram, for example. It moves like an absolute positioned object. Beautiful and graceful.
I found the plugin https://github.com/Grsmto/simplebar , seems to be adequate, I haven't tried it in combat. Maybe someone knows what solutions are used by Trello or Telegram? Or they saw their own, then what would you advise to use?

Answer 1

Telegram Web ( Webogram ) uses nanoScrollerJS. Thanks for the Artray solution .

Answer 2

Scrolling in Trello is done with css. Try to go through firefox and they will be unstyled