System 1 through 6 Scrollbars
(Note: Non-proportional scroll area indicator is not possible)
The original Macintosh scrollbars didn't have any colour, and the arrows in the buttons all touched a side.
All of this is just using (WebKit-specific; sorry, Firefox users!) CSS. No images here whatsoever!
(You probably wouldn't want to use CSS only for this for a real site, though, but this was a fun exercise!)
— Jessica ❤️