Nicescroll is an easy-to-use solution to have a custom scrollbars compatble with destkop, tablet and phone devices. It supports DIVs, IFrames, textarea, and document page (body) scrollbars.
Nicescroll - Features:
simple installation and activation, it works with NO modification of your code.
very stylish scrollbars, with no occupation on your window (original browser scrollbars need some of page space and reduces window/div usable width)
you can style main document scrollbar (body) too!!