On Chromium-based browsers, workboard columns such as https://we.phorge.it/project/view/105/ have customized thin scrollbars: {F312319}
On Firefox, however, they have the default OS scrollbars: {F312320}
This is because they are defined using non-standard CSS pseudoelements `::-webkit-scrollbar` and `::-webkit-scrollbar-thumb`.
The default scrollbars can get really unsightly on large workboards, such as https://phabricator.wikimedia.org/project/view/4864/: {F312321}
Firefox supports the standard `scrollbar-width: thin` CSS property that can be used to achieve a similar effect: https://caniuse.com/mdn-css_properties_scrollbar-width
It would look like this:
{F312322}
{F312323}
(None of this applies if your OS does not display static scrollbars. macOS and many Linux environments only display overlay scrollbars by default.)
== Other examples ==
Examples in GNU/Linux with KDE, on hover:
| Before | After |
|-----------|-----------|
| {F313082} | {F313083} |
Examples in GNU/Linux with KDE, on bar selected:
| Before | After |
|-----------|-----------|
| {F313084} | {F313085} |
[This is a follow-up task for Q63.]