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Non-standard
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.

The ::-ms-expand CSS pseudo-element is a Microsoft extension that represents the button of a <select> menu control that opens or closes the drop-down menu. Typically it is a triangle that points downward.

Allowable Properties

Only the following CSS properties can be used in a rule with ::-ms-expand in its selector. Other properties are ignored.

Syntax

::-ms-clear

Specifications

Not part of any specification.

Browser compatibility

No compatibility data found. Please contribute data for "css.selectors.-ms-expand" (depth: 1) to the MDN compatibility data repository.

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