Custom Scrollbars in Webflow
The scrollbars will only work on the published site, so in order to see this in action, clone, then publish this website on Webflow. This provides support for browsers that use webkit, so most modern desktop browers. It doesn't use any Javascript, or external library, so it won't slow your site down and is the recommended way to create custom scrollbars.
Make sure to follow on Webflow for more free widgets and tutorials!