CSS Scrollbars: scrollbar-color, scrollbar-width
DRANK
The CSS Scrollbars spec allows authors to style scrollbars by specifying their colors and thickness. The scrollbar-color property provides the capability of changing the color scheme of scrollbars so they fit better into the particular style of a web page. The scrollbar-width property allows the use of narrower scrollbars that may be more suitable for some use cases, or even to hide the scrollbars completely without affecting scrollability.