NanoScroller.js
NanoScroller is a pretty neat JavaScript plugin that allows you to add Mac OS Lion-styled scrollbars to your website.
It is very lightweight and is quick and easy to set up. With its relatively customisable appearance, it can provide the finishing touches to a custom design and make scrollable content areas that little bit more appealing.
https://jamesflorentino.github.io/nanoScrollerJS/
Check out my website:
https://declankay.com/