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This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
-ms-overflow-style is a proprietary CSS property, specific to Internet Explorer and Microsoft Edge, which controls the behavior of scrollbars when an element's content overflows.
|Applies to||non-replaced block-level elements and non-replaced inline-block elements|
|Computed value||as specified|
|Canonical order||the unique non-ambiguous order defined by the formal grammar|
- Initial value. Same as
- Scrollbars are never displayed, although the element can still be scrolled if the element's content overflows.
- "Traditional" scrollbars are displayed if the element's content overflows. "Traditional" scrollbars don't auto-hide and never overlap the element's content. Accordingly, the dimensions of the layout area for the content are reduced by the girth of the scrollbar(s).
- Auto-hiding scrollbars are used if the element's content overflows. Auto-hiding scrollbars are displayed during scrolling or shortly after the pointer interacts with the page, and are hidden shortly after scrolling and pointer interaction stops. When they are visible, auto-hiding scrollbars overlap the element's content.
Not part of any specification. Microsoft has a description on MSDN.