Scroll down indicator css javascript and html

I have seen these a couple of times, indictating to the user that there is further content down the page, and they should scroll to view it. Then as you scroll down the indicator dissapears. So we w..

nice webkit scrollbars (scroll bar, web kit, nice)

scrollbar replacement simplebar

a nice and simple scroll bar replacement code <link rel="stylesheet" href="https://unpkg.com/simplebar@latest/dist/simplebar.css" /> <script src="https://unpkg.com/simplebar@latest/dist/..