Scrollbar color chang

Hi all,

on my website I would like to change the color of the scrollbar to white/grey. So the standard. unfortunately I do not know how. can someone help me?

Thanks a lot!

Here is my site Read-Only: [LINK][1]
([how to share your site Read-Only link][2])

[1]: Webflow - Onboarding | WF Media GmbH)
[2]: Share a read-only link | Webflow University