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-high-contrast CSS media feature is a Microsoft extension that describes whether the application is being displayed in high contrast mode, and with what color variation.
High Contrast Mode is a specialized display mode that prioritizes making content as legible as possible by dynamically replacing foreground and background colors with a user-specified theme. For web content, theme colors are mapped to content types.
This media feature applies to bitmap media types. It does not accept min/max prefixes.