scrollbar-width
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
The scrollbar-width
property allows the author to set the desired thickness of an element's scrollbars when they are shown.
The purpose of the scrollbar-width
is to optimize the space occupied by the scrollbar on a page or element; the purpose is not related to scrollbar aesthetics. The scrollbar-width
predefined keyword values indicate to the user agent whether a normal or smaller scrollbar should be rendered. Avoid using none
, as hiding a scrollbar negatively impacts accessibility.
Note: For elements that are scrollable only via programmatic means and not by direct user interaction, use the overflow
property with a value of hidden
rather than scrollbar-width: none
.
Syntax
/* Keyword values */
scrollbar-width: auto;
scrollbar-width: thin;
scrollbar-width: none;
/* Global values */
scrollbar-width: inherit;
scrollbar-width: initial;
scrollbar-width: revert;
scrollbar-width: revert-layer;
scrollbar-width: unset;
Values
auto
-
The default scrollbar width for the platform.
thin
-
A thin scrollbar width variant on platforms that provide that option, or a thinner scrollbar than the default platform scrollbar width.
none
-
No scrollbar shown, however the element will still be scrollable.
Note: User Agents must apply any scrollbar-width
value set on the root element to the viewport.
Accessibility
Use this property with caution — setting scrollbar-width
to thin
or none
can make content hard or impossible to scroll if the author does not provide an alternative scrolling mechanism. While swiping gestures or mouse wheels can enable scrolling on such content, some devices have no scroll alternative.
WCAG criterion 2.1.1 (Keyboard) has been in place for a long time to advise on basic keyboard accessibility, and this should include scrolling of content areas. And introduced in WCAG 2.1, criterion 2.5.5 (Target Size) advises that touch targets should be at least 44px in width and height (although the problem is compounded on high-resolution screens; thorough testing is advised).
Formal definition
Initial value | auto |
---|---|
Applies to | scrolling boxes |
Inherited | no |
Computed value | as specified |
Animation type | by computed value type |
Formal syntax
Examples
Sizing overflow scrollbars
CSS
.scroller {
width: 300px;
height: 100px;
overflow-y: scroll;
scrollbar-width: thin;
}
HTML
<div class="scroller">
Veggies es bonus vobis, proinde vos postulo essum magis kohlrabi welsh onion
daikon amaranth tatsoi tomatillo melon azuki bean garlic. Gumbo beet greens
corn soko endive gumbo gourd. Parsley shallot courgette tatsoi pea sprouts
fava bean collard greens dandelion okra wakame tomato. Dandelion cucumber
earthnut pea peanut soko zucchini.
</div>
Result
Specifications
Specification |
---|
CSS Scrollbars Styling Module Level 1 # scrollbar-width |
Browser compatibility
BCD tables only load in the browser