Microsoft CSS extensions
Microsoft applications such as Edge and Internet Explorer support a number of special Microsoft extensions to CSS. These extensions are prefixed with -ms-.
Microsoft-only properties (avoid using on websites)
Note: These properties will only work in Microsoft applications, and are not on a standards track.
-ms-accelerator-ms-block-progression-ms-content-zoom-chaining-ms-content-zooming-ms-content-zoom-limit-ms-content-zoom-limit-max-ms-content-zoom-limit-min-ms-content-zoom-snap-ms-content-zoom-snap-points-ms-content-zoom-snap-type-ms-filter-ms-flow-from-ms-flow-into-ms-high-contrast-adjust-ms-hyphenate-limit-chars-ms-hyphenate-limit-lines-ms-hyphenate-limit-zone-ms-ime-align-ms-overflow-style-ms-scrollbar-3dlight-color-ms-scrollbar-arrow-color-ms-scrollbar-base-color-ms-scrollbar-darkshadow-color-ms-scrollbar-face-color-ms-scrollbar-highlight-color-ms-scrollbar-shadow-color-ms-scrollbar-track-color-ms-scroll-chaining-ms-scroll-limit-ms-scroll-limit-x-max-ms-scroll-limit-x-min-ms-scroll-limit-y-max-ms-scroll-limit-y-min-ms-scroll-rails-ms-scroll-snap-points-x-ms-scroll-snap-points-y-ms-scroll-snap-x-ms-scroll-snap-y-ms-scroll-translation-ms-text-autospace-ms-touch-select-ms-wrap-flow-ms-wrap-margin-ms-wrap-throughzoom
Pseudo-elements
::-ms-browse*::-ms-check::-ms-clear::-ms-expand::-ms-fill::-ms-fill-lower::-ms-fill-upper::-ms-reveal::-ms-thumb::-ms-ticks-after::-ms-ticks-before::-ms-tooltip::-ms-track::-ms-value
* Now standard.