How do I change the style of the scrollbar?

[Wirajan]

How do I change the style of the scrollbar, for an element that has overflow set to scroll?
I would like to change its background to be the same as my app’s.

[Mark_Pederson]

Add some CSS -

scrollbar-color: rebeccapurple green; /* Two valid colors.
The first applies to the thumb of the scrollbar, the second to the track. */

[Wirajan]

Hello, @Mark_Pederson for the response. I’ve added as you proposed, but had no effect:

[luka]

Try in the published app