Not yet stable

For a given set of browsers, what APIs are not yet in all of them.

Example Comparisons
Browsers
Features

Summary

A count of the number of APIs are in Browser X but not in Browser Y.
Not in EdgeNot in Firefox
In Edge 590
In Firefox 111

Unstable APIs

Below is a list of features that are not in all of Edge and Firefox

Raw Data

Quick Links:

CSS Data

API First Browser Date Days in Limbo Notes
css.at-rules.container.anchor_position_queries 📋Edge12/5/2025104
css.at-rules.container.anchor_position_queries.fallback 📋Edge12/5/2025104
css.at-rules.container.anchor_position_queries.fallback.any_value 📋Edge12/5/2025104
css.at-rules.container.scroll-state_queries 📋Edge2/6/2025406
css.at-rules.container.scroll-state_queries.scrollable 📋Edge2/6/2025406
css.at-rules.container.scroll-state_queries.scrolled 📋Edge1/21/202657
css.at-rules.container.scroll-state_queries.snapped 📋Edge2/6/2025406
css.at-rules.container.scroll-state_queries.stuck 📋Edge2/6/2025406
css.at-rules.container.style_queries_for_custom_properties 📋Edge3/13/20231102
Safari: The document element cannot be a container. See bug 271040.Safari on iOS: The document element cannot be a container. See bug 271040.WebView on iOS: The document element cannot be a container. See bug 271040.
css.at-rules.container.style_queries_for_custom_properties.range_syntax 📋Edge10/31/2025139
css.at-rules.custom-media 📋Firefox2/24/202623
css.at-rules.document Firefox6/26/20182823
Firefox: Only supports an empty url-prefix() value, which is supported due to its use in Firefox browser detection. Still supported in user stylesheets.Firefox for Android: Only supports an empty url-prefix() value, which is supported due to its use in Firefox for Android browser detection. Still supported in user stylesheets.
css.at-rules.font-face.OpenType_CBDT_CBLC Edge1/15/20202255
css.at-rules.font-face.OpenType_SBIX Edge1/15/20202255
css.at-rules.font-face.OpenType_SVG Firefox7/22/20144258
css.at-rules.function 📋Edge8/7/2025224
css.at-rules.function.result 📋Edge8/7/2025224
css.at-rules.keyframes.named_range_keyframes 📋Edge7/21/2023972
css.at-rules.media.-moz-device-pixel-ratio Firefox3/22/20115476
css.at-rules.media.color-index 📋Edge1/15/20202255
css.at-rules.media.device-posture 📋Edge1/17/2025426
css.at-rules.media.display-mode.picture-in-picture 📋Edge3/22/2024727
css.at-rules.media.display-mode.window-controls-overlay 📋Edge9/1/20221295
css.at-rules.media.horizontal-viewport-segments 📋Edge6/26/2025266
css.at-rules.media.inverted-colors 📋Firefox6/6/20231017
css.at-rules.media.prefers-reduced-data 📋Edge8/27/20202030
css.at-rules.media.vertical-viewport-segments 📋Edge6/26/2025266
css.at-rules.page.bottom-center 📋Edge11/14/2024490
css.at-rules.page.bottom-left 📋Edge11/14/2024490
css.at-rules.page.bottom-left-corner 📋Edge11/14/2024490
css.at-rules.page.bottom-right 📋Edge11/14/2024490
css.at-rules.page.bottom-right-corner 📋Edge11/14/2024490
css.at-rules.page.left-bottom 📋Edge11/14/2024490
css.at-rules.page.left-middle 📋Edge11/14/2024490
css.at-rules.page.left-top 📋Edge11/14/2024490
css.at-rules.page.right-bottom 📋Edge11/14/2024490
css.at-rules.page.right-middle 📋Edge11/14/2024490
css.at-rules.page.right-top 📋Edge11/14/2024490
css.at-rules.page.top-center 📋Edge11/14/2024490
css.at-rules.page.top-left 📋Edge11/14/2024490
css.at-rules.page.top-left-corner 📋Edge11/14/2024490
css.at-rules.page.top-right 📋Edge11/14/2024490
css.at-rules.page.top-right-corner 📋Edge11/14/2024490
css.at-rules.view-transition 📋Edge6/13/2024644
css.properties.-moz-float-edge Firefox11/9/20047800
css.properties.-moz-force-broken-image-icon Firefox11/9/20047800
css.properties.-moz-orient Firefox8/16/20115329
css.properties.-moz-orient.block Firefox8/11/20153873
css.properties.-moz-orient.inline Firefox8/11/20153873
css.properties.-webkit-app-region Edge1/15/20202255
css.properties.-webkit-border-before Edge1/15/20202255
css.properties.-webkit-border-horizontal-spacing Edge1/15/20202255
css.properties.-webkit-border-vertical-spacing Edge1/15/20202255
css.properties.-webkit-box-reflect Edge1/15/20202255
css.properties.-webkit-column-break-after Edge1/15/20202255
css.properties.-webkit-column-break-before Edge1/15/20202255
css.properties.-webkit-column-break-inside Edge1/15/20202255
css.properties.-webkit-locale Edge1/15/20202255
css.properties.-webkit-logical-height Edge1/15/20202255
css.properties.-webkit-logical-width Edge1/15/20202255
css.properties.-webkit-margin-after Edge1/15/20202255
css.properties.-webkit-margin-before Edge1/15/20202255
css.properties.-webkit-mask-box-image Edge1/15/20202255
css.properties.-webkit-mask-composite Edge10/2/20182725
css.properties.-webkit-max-logical-height Edge1/15/20202255
css.properties.-webkit-max-logical-width Edge1/15/20202255
css.properties.-webkit-min-logical-height Edge1/15/20202255
css.properties.-webkit-min-logical-width Edge1/15/20202255
css.properties.-webkit-perspective-origin-x Edge1/15/20202255
css.properties.-webkit-perspective-origin-y Edge1/15/20202255
css.properties.-webkit-rtl-ordering Edge1/15/20202255
css.properties.-webkit-tap-highlight-color Edge7/29/20153886
css.properties.-webkit-text-combine Edge1/15/20202255
css.properties.-webkit-text-decorations-in-effect Edge1/15/20202255
css.properties.-webkit-transform-origin-x Edge1/15/20202255
css.properties.-webkit-transform-origin-y Edge1/15/20202255
css.properties.-webkit-transform-origin-z Edge1/15/20202255
css.properties.-webkit-user-drag Edge1/15/20202255
css.properties.align-content.flex_context.last_baseline Firefox3/7/20173299
Safari: This value is recognized, but has no effect. See bug 235005.Safari on iOS: This value is recognized, but has no effect. See bug 235005.WebView on iOS: This value is recognized, but has no effect. See bug 235005.
css.properties.align-content.multicol_context 📋Edge3/22/2024727
css.properties.alignment-baseline 📋Edge1/15/20202255
css.properties.alignment-baseline.alphabetic Edge1/15/20202255
css.properties.alignment-baseline.baseline Edge1/15/20202255
css.properties.alignment-baseline.central Edge1/15/20202255
css.properties.alignment-baseline.ideographic Edge1/15/20202255
css.properties.alignment-baseline.mathematical Edge1/15/20202255
css.properties.alignment-baseline.middle Edge1/15/20202255
css.properties.alignment-baseline.text-after-edge Edge1/15/20202255
css.properties.alignment-baseline.text-before-edge Edge1/15/20202255
css.properties.animation.animation-timeline_included Edge7/21/2023972
Chrome: Support is currently reset-only. Including animation resets a previously-declared animation-timeline value to auto, but animation-timeline cannot be set via animation.Chrome Android: Support is currently reset-only. Including animation resets a previously-declared animation-timeline value to auto, but animation-timeline cannot be set via animation.Edge: Support is currently reset-only. Including animation resets a previously-declared animation-timeline value to auto, but animation-timeline cannot be set via animation.Opera: Support is currently reset-only. Including animation resets a previously-declared animation-timeline value to auto, but animation-timeline cannot be set via animation.Opera Android: Support is currently reset-only. Including animation resets a previously-declared animation-timeline value to auto, but animation-timeline cannot be set via animation.Samsung Internet: Support is currently reset-only. Including animation resets a previously-declared animation-timeline value to auto, but animation-timeline cannot be set via animation.WebView Android: Support is currently reset-only. Including animation resets a previously-declared animation-timeline value to auto, but animation-timeline cannot be set via animation.
css.properties.animation-duration.auto 📋Edge7/21/2023972
Firefox: Firefox does not currently support the auto value and only accepts values in seconds or milliseconds. It's recommended that 1ms is used until auto is supported.Firefox for Android: Firefox for Android does not currently support the auto value and only accepts values in seconds or milliseconds. It's recommended that 1ms is used until auto is supported.
css.properties.animation-range 📋Edge7/21/2023972
css.properties.animation-range.normal 📋Edge7/21/2023972
css.properties.animation-range-end 📋Edge7/21/2023972
css.properties.animation-range-end.normal 📋Edge7/21/2023972
css.properties.animation-range-start 📋Edge7/21/2023972
css.properties.animation-range-start.normal 📋Edge7/21/2023972
css.properties.animation-timeline.auto 📋Edge7/21/2023972
css.properties.animation-timeline.none 📋Edge7/21/2023972
css.properties.animation-trigger 📋Edge3/12/20267
css.properties.animation-trigger.none 📋Edge3/12/20267
css.properties.appearance.base-select 📋Edge4/4/2025349
css.properties.background-image.element 📋Firefox3/22/20115476
css.properties.baseline-shift 📋Edge1/15/20202255
css.properties.baseline-shift.baseline 📋Edge1/15/20202255
css.properties.baseline-shift.sub 📋Edge1/15/20202255
css.properties.baseline-shift.super 📋Edge1/15/20202255
css.properties.block-size.fit-content_function Firefox8/10/20211682
css.properties.block-size.stretch 📋Edge6/26/2025266
css.properties.break-after.always Firefox1/29/20192606
css.properties.break-after.avoid Edge1/15/20202255
Firefox: The value is recognized, but has no effect. See bug 1972340.Firefox for Android: The value is recognized, but has no effect. See bug 1972340.Safari: The value is recognized, but has no effect. See bug 294559.Safari on iOS: The value is recognized, but has no effect. See bug 294559.WebView on iOS: The value is recognized, but has no effect. See bug 294559.
css.properties.break-after.avoid-column Edge1/15/20202255
css.properties.break-after.avoid-page Edge1/15/20202255
css.properties.break-after.column Edge1/15/20202255
css.properties.break-after.multicol_context.always Firefox1/29/20192606
Firefox: Only supported in print mode. See bug 1675322.Firefox for Android: Only supported in print mode. See bug 1675322.
css.properties.break-after.multicol_context.avoid Edge5/31/20221388
css.properties.break-after.multicol_context.avoid-column Edge5/31/20221388
css.properties.break-after.multicol_context.column Edge7/29/20153886
css.properties.break-after.paged_context.always Firefox1/29/20192606
css.properties.break-after.paged_context.avoid-page Edge7/29/20153886
css.properties.break-after.recto Edge1/15/20202255
css.properties.break-after.verso Edge1/15/20202255
css.properties.break-before.always Firefox1/29/20192606
css.properties.break-before.avoid Edge1/15/20202255
Firefox: The value is recognized, but has no effect. See bug 1972340.Firefox for Android: The value is recognized, but has no effect. See bug 1972340.Safari: The value is recognized, but has no effect. See bug 294559.Safari on iOS: The value is recognized, but has no effect. See bug 294559.WebView on iOS: The value is recognized, but has no effect. See bug 294559.
css.properties.break-before.avoid-column Edge1/15/20202255
css.properties.break-before.avoid-page Edge1/15/20202255
css.properties.break-before.column Edge1/15/20202255
css.properties.break-before.multicol_context.always Firefox1/29/20192606
Firefox: Only supported in print mode. See bug 1675322.Firefox for Android: Only supported in print mode. See bug 1675322.
css.properties.break-before.multicol_context.avoid Edge5/31/20221388
css.properties.break-before.multicol_context.avoid-column Edge5/31/20221388
css.properties.break-before.multicol_context.column Edge7/29/20153886
css.properties.break-before.paged_context.always Firefox1/29/20192606
css.properties.break-before.recto Edge1/15/20202255
css.properties.break-before.verso Edge1/15/20202255
css.properties.buffered-rendering Edge1/15/20202255
css.properties.buffered-rendering.auto Edge1/15/20202255
css.properties.buffered-rendering.dynamic Edge1/15/20202255
css.properties.buffered-rendering.static Edge1/15/20202255
css.properties.caption-side.writing-mode_relative_values Firefox11/3/20153789
css.properties.caret-animation 📋Edge9/5/2025195
css.properties.caret-animation.auto 📋Edge9/5/2025195
css.properties.caret-animation.manual 📋Edge9/5/2025195
css.properties.caret-shape 📋Edge1/21/202657
css.properties.caret-shape.auto 📋Edge1/21/202657
css.properties.caret-shape.bar 📋Edge1/21/202657
css.properties.caret-shape.block 📋Edge1/21/202657
css.properties.caret-shape.underscore 📋Edge1/21/202657
css.properties.color-adjust 📋Firefox8/2/20163516
css.properties.color-adjust.economy 📋Firefox8/2/20163516
css.properties.color-adjust.exact 📋Firefox8/2/20163516
css.properties.color-interpolation.linearGradient Firefox2/20/2024758
css.properties.color-rendering Edge1/15/20202255
css.properties.color-rendering.auto Edge1/15/20202255
css.properties.color-rendering.optimizeQuality Edge1/15/20202255
css.properties.color-rendering.optimizeSpeed Edge1/15/20202255
css.properties.column-height 📋Edge2/14/202633
css.properties.column-height.auto 📋Edge2/14/202633
css.properties.column-wrap 📋Edge2/14/202633
css.properties.column-wrap.auto 📋Edge2/14/202633
css.properties.column-wrap.nowrap 📋Edge2/14/202633
css.properties.column-wrap.wrap 📋Edge2/14/202633
css.properties.columns.column-height 📋Edge2/14/202633
css.properties.container-type.anchored 📋Edge12/5/2025104
css.properties.container-type.scroll-state 📋Edge2/6/2025406
css.properties.content.alt_text.counters Edge9/5/2025195
Chrome: Counters are recognised, but the spoken values do not incrementChrome Android: Counters are recognised, but the spoken values do not incrementEdge: Counters are recognised, but the spoken values do not incrementOpera: Counters are recognised, but the spoken values do not incrementOpera Android: Counters are recognised, but the spoken values do not incrementWebView Android: Counters are recognised, but the spoken values do not increment
css.properties.content.none_applies_to_elements Firefox8/10/20211682
css.properties.content-visibility.is_transitionable 📋Edge9/15/2023916
css.properties.content-visibility.keyframe_animatable 📋Edge8/21/2023941
css.properties.corner-block-end-shape 📋Edge8/7/2025224
css.properties.corner-block-end-shape.bevel 📋Edge8/7/2025224
css.properties.corner-block-end-shape.notch 📋Edge8/7/2025224
css.properties.corner-block-end-shape.round 📋Edge8/7/2025224
css.properties.corner-block-end-shape.scoop 📋Edge8/7/2025224
css.properties.corner-block-end-shape.square 📋Edge8/7/2025224
css.properties.corner-block-end-shape.squircle 📋Edge8/7/2025224
css.properties.corner-block-start-shape 📋Edge8/7/2025224
css.properties.corner-block-start-shape.bevel 📋Edge8/7/2025224
css.properties.corner-block-start-shape.notch 📋Edge8/7/2025224
css.properties.corner-block-start-shape.round 📋Edge8/7/2025224
css.properties.corner-block-start-shape.scoop 📋Edge8/7/2025224
css.properties.corner-block-start-shape.square 📋Edge8/7/2025224
css.properties.corner-block-start-shape.squircle 📋Edge8/7/2025224
css.properties.corner-bottom-left-shape 📋Edge8/7/2025224
css.properties.corner-bottom-left-shape.bevel 📋Edge8/7/2025224
css.properties.corner-bottom-left-shape.notch 📋Edge8/7/2025224
css.properties.corner-bottom-left-shape.round 📋Edge8/7/2025224
css.properties.corner-bottom-left-shape.scoop 📋Edge8/7/2025224
css.properties.corner-bottom-left-shape.square 📋Edge8/7/2025224
css.properties.corner-bottom-left-shape.squircle 📋Edge8/7/2025224
css.properties.corner-bottom-right-shape 📋Edge8/7/2025224
css.properties.corner-bottom-right-shape.bevel 📋Edge8/7/2025224
css.properties.corner-bottom-right-shape.notch 📋Edge8/7/2025224
css.properties.corner-bottom-right-shape.round 📋Edge8/7/2025224
css.properties.corner-bottom-right-shape.scoop 📋Edge8/7/2025224
css.properties.corner-bottom-right-shape.square 📋Edge8/7/2025224
css.properties.corner-bottom-right-shape.squircle 📋Edge8/7/2025224
css.properties.corner-bottom-shape 📋Edge8/7/2025224
css.properties.corner-bottom-shape.bevel 📋Edge8/7/2025224
css.properties.corner-bottom-shape.notch 📋Edge8/7/2025224
css.properties.corner-bottom-shape.round 📋Edge8/7/2025224
css.properties.corner-bottom-shape.scoop 📋Edge8/7/2025224
css.properties.corner-bottom-shape.square 📋Edge8/7/2025224
css.properties.corner-bottom-shape.squircle 📋Edge8/7/2025224
css.properties.corner-end-end-shape 📋Edge8/7/2025224
css.properties.corner-end-end-shape.bevel 📋Edge8/7/2025224
css.properties.corner-end-end-shape.notch 📋Edge8/7/2025224
css.properties.corner-end-end-shape.round 📋Edge8/7/2025224
css.properties.corner-end-end-shape.scoop 📋Edge8/7/2025224
css.properties.corner-end-end-shape.square 📋Edge8/7/2025224
css.properties.corner-end-end-shape.squircle 📋Edge8/7/2025224
css.properties.corner-end-start-shape 📋Edge8/7/2025224
css.properties.corner-end-start-shape.bevel 📋Edge8/7/2025224
css.properties.corner-end-start-shape.notch 📋Edge8/7/2025224
css.properties.corner-end-start-shape.round 📋Edge8/7/2025224
css.properties.corner-end-start-shape.scoop 📋Edge8/7/2025224
css.properties.corner-end-start-shape.square 📋Edge8/7/2025224
css.properties.corner-end-start-shape.squircle 📋Edge8/7/2025224
css.properties.corner-inline-end-shape 📋Edge8/7/2025224
css.properties.corner-inline-end-shape.bevel 📋Edge8/7/2025224
css.properties.corner-inline-end-shape.notch 📋Edge8/7/2025224
css.properties.corner-inline-end-shape.round 📋Edge8/7/2025224
css.properties.corner-inline-end-shape.scoop 📋Edge8/7/2025224
css.properties.corner-inline-end-shape.square 📋Edge8/7/2025224
css.properties.corner-inline-end-shape.squircle 📋Edge8/7/2025224
css.properties.corner-inline-start-shape 📋Edge8/7/2025224
css.properties.corner-inline-start-shape.bevel 📋Edge8/7/2025224
css.properties.corner-inline-start-shape.notch 📋Edge8/7/2025224
css.properties.corner-inline-start-shape.round 📋Edge8/7/2025224
css.properties.corner-inline-start-shape.scoop 📋Edge8/7/2025224
css.properties.corner-inline-start-shape.square 📋Edge8/7/2025224
css.properties.corner-inline-start-shape.squircle 📋Edge8/7/2025224
css.properties.corner-left-shape 📋Edge8/7/2025224
css.properties.corner-left-shape.bevel 📋Edge8/7/2025224
css.properties.corner-left-shape.notch 📋Edge8/7/2025224
css.properties.corner-left-shape.round 📋Edge8/7/2025224
css.properties.corner-left-shape.scoop 📋Edge8/7/2025224
css.properties.corner-left-shape.square 📋Edge8/7/2025224
css.properties.corner-left-shape.squircle 📋Edge8/7/2025224
css.properties.corner-right-shape 📋Edge8/7/2025224
css.properties.corner-right-shape.bevel 📋Edge8/7/2025224
css.properties.corner-right-shape.notch 📋Edge8/7/2025224
css.properties.corner-right-shape.round 📋Edge8/7/2025224
css.properties.corner-right-shape.scoop 📋Edge8/7/2025224
css.properties.corner-right-shape.square 📋Edge8/7/2025224
css.properties.corner-right-shape.squircle 📋Edge8/7/2025224
css.properties.corner-shape 📋Edge8/7/2025224
css.properties.corner-shape.bevel 📋Edge8/7/2025224
css.properties.corner-shape.notch 📋Edge8/7/2025224
css.properties.corner-shape.round 📋Edge8/7/2025224
css.properties.corner-shape.scoop 📋Edge8/7/2025224
css.properties.corner-shape.square 📋Edge8/7/2025224
css.properties.corner-shape.squircle 📋Edge8/7/2025224
css.properties.corner-start-end-shape 📋Edge8/7/2025224
css.properties.corner-start-end-shape.bevel 📋Edge8/7/2025224
css.properties.corner-start-end-shape.notch 📋Edge8/7/2025224
css.properties.corner-start-end-shape.round 📋Edge8/7/2025224
css.properties.corner-start-end-shape.scoop 📋Edge8/7/2025224
css.properties.corner-start-end-shape.square 📋Edge8/7/2025224
css.properties.corner-start-end-shape.squircle 📋Edge8/7/2025224
css.properties.corner-start-start-shape 📋Edge8/7/2025224
css.properties.corner-start-start-shape.bevel 📋Edge8/7/2025224
css.properties.corner-start-start-shape.notch 📋Edge8/7/2025224
css.properties.corner-start-start-shape.round 📋Edge8/7/2025224
css.properties.corner-start-start-shape.scoop 📋Edge8/7/2025224
css.properties.corner-start-start-shape.square 📋Edge8/7/2025224
css.properties.corner-start-start-shape.squircle 📋Edge8/7/2025224
css.properties.corner-top-left-shape 📋Edge8/7/2025224
css.properties.corner-top-left-shape.bevel 📋Edge8/7/2025224
css.properties.corner-top-left-shape.notch 📋Edge8/7/2025224
css.properties.corner-top-left-shape.round 📋Edge8/7/2025224
css.properties.corner-top-left-shape.scoop 📋Edge8/7/2025224
css.properties.corner-top-left-shape.square 📋Edge8/7/2025224
css.properties.corner-top-left-shape.squircle 📋Edge8/7/2025224
css.properties.corner-top-right-shape 📋Edge8/7/2025224
css.properties.corner-top-right-shape.bevel 📋Edge8/7/2025224
css.properties.corner-top-right-shape.notch 📋Edge8/7/2025224
css.properties.corner-top-right-shape.round 📋Edge8/7/2025224
css.properties.corner-top-right-shape.scoop 📋Edge8/7/2025224
css.properties.corner-top-right-shape.square 📋Edge8/7/2025224
css.properties.corner-top-right-shape.squircle 📋Edge8/7/2025224
css.properties.corner-top-shape 📋Edge8/7/2025224
css.properties.corner-top-shape.bevel 📋Edge8/7/2025224
css.properties.corner-top-shape.notch 📋Edge8/7/2025224
css.properties.corner-top-shape.round 📋Edge8/7/2025224
css.properties.corner-top-shape.scoop 📋Edge8/7/2025224
css.properties.corner-top-shape.square 📋Edge8/7/2025224
css.properties.corner-top-shape.squircle 📋Edge8/7/2025224
css.properties.counter-reset.reset_does_not_affect_siblings Firefox10/20/20201976
css.properties.counter-reset.reversed 📋Firefox1/11/20221528
css.properties.display.is_transitionable 📋Edge9/15/2023916
css.properties.display.keyframe_animatable 📋Edge8/21/2023941
css.properties.display.math Edge1/12/20231162
css.properties.display.ruby Firefox5/12/20153964
css.properties.display.ruby-base Firefox5/12/20153964
css.properties.display.ruby-base-container Firefox5/12/20153964
css.properties.display.ruby-text Firefox5/12/20153964
css.properties.display.ruby-text-container Firefox5/12/20153964
css.properties.dynamic-range-limit 📋Edge5/1/2025322
css.properties.dynamic-range-limit.constrained 📋Edge5/1/2025322
css.properties.dynamic-range-limit.dynamic-range-limit-mix_values 📋Edge5/1/2025322
css.properties.dynamic-range-limit.no-limit 📋Edge5/1/2025322
css.properties.dynamic-range-limit.standard 📋Edge5/1/2025322
css.properties.field-sizing 📋Edge3/22/2024727
css.properties.field-sizing.content 📋Edge3/22/2024727
css.properties.field-sizing.fixed 📋Edge3/22/2024727
css.properties.flex.stretch 📋Edge6/26/2025266
css.properties.flex-basis.stretch 📋Edge6/26/2025266
css.properties.font-palette.animation_computed Edge1/25/2024784
css.properties.font-palette.palette-mix_function 📋Edge1/25/2024784
css.properties.font-synthesis.position Firefox9/26/2023905
css.properties.font-synthesis-position 📋Firefox9/26/2023905
css.properties.font-synthesis-position.auto 📋Firefox9/26/2023905
css.properties.font-synthesis-position.none 📋Firefox9/26/2023905
css.properties.font-synthesis-style.oblique-only 📋Firefox4/1/2025352
css.properties.forced-color-adjust.preserve-parent-color 📋Edge10/3/20221263
css.properties.grid-template-columns.masonry 📋Firefox6/2/20202116
css.properties.grid-template-rows.masonry 📋Firefox6/2/20202116
css.properties.height.fit-content_function 📋Firefox8/10/20211682
css.properties.hyphens.language_albanian Edge4/6/20231078
css.properties.hyphens.language_amharic Edge4/6/20231078
css.properties.hyphens.language_armenian Edge11/19/20201946
css.properties.hyphens.language_assamese Edge11/19/20201946
css.properties.hyphens.language_basque Edge11/19/20201946
css.properties.hyphens.language_belarusian Edge11/19/20201946
css.properties.hyphens.language_bengali Edge11/19/20201946
css.properties.hyphens.language_bosnian Firefox11/8/20115245
css.properties.hyphens.language_catalan Firefox11/8/20115245
css.properties.hyphens.language_cyrillic_mongolian Edge11/19/20201946
css.properties.hyphens.language_esperanto Firefox11/8/20115245
css.properties.hyphens.language_ethiopic_script_mul Edge4/6/20231078
css.properties.hyphens.language_ethiopic_script_und Edge11/19/20201946
css.properties.hyphens.language_finnish Firefox11/8/20115245
css.properties.hyphens.language_georgian Edge4/6/20231078
css.properties.hyphens.language_gujarati Edge11/19/20201946
css.properties.hyphens.language_hindi Edge11/19/20201946
css.properties.hyphens.language_icelandic Firefox11/8/20115245
css.properties.hyphens.language_interlingua Firefox11/8/20115245
css.properties.hyphens.language_irish Edge11/19/20201946
css.properties.hyphens.language_kannada Edge11/19/20201946
css.properties.hyphens.language_kurmanji Firefox11/8/20115245
css.properties.hyphens.language_latvian Edge4/6/20231078
css.properties.hyphens.language_malayalam Edge11/19/20201946
css.properties.hyphens.language_marathi Edge11/19/20201946
css.properties.hyphens.language_modern_greek Edge4/6/20231078
css.properties.hyphens.language_mongolian Firefox11/8/20115245
css.properties.hyphens.language_old_slavonic Edge11/19/20201946
css.properties.hyphens.language_oriya Edge11/19/20201946
css.properties.hyphens.language_polish Firefox7/22/20144258
css.properties.hyphens.language_punjabi Edge11/19/20201946
css.properties.hyphens.language_tamil Edge11/19/20201946
css.properties.hyphens.language_telugu Edge11/19/20201946
css.properties.hyphens.language_turkish Firefox12/20/20115203
css.properties.hyphens.language_turkmen Edge11/19/20201946
css.properties.hyphens.language_upper_sorbian Firefox11/8/20115245
css.properties.image-rendering.optimizeQuality Firefox1/21/20105901
css.properties.image-rendering.optimizeSpeed Firefox1/21/20105901
css.properties.image-rendering.smooth 📋Firefox10/5/20211626
css.properties.ime-mode 📋Firefox6/17/20086484
css.properties.initial-letter 📋Edge2/9/20231134
Safari: See bug 229090 for the unprefixed property.Safari on iOS: See bug 229090 for the unprefixed property.Safari on iOS: Does not support decimal values. See bug 296785.WebView on iOS: See bug 229090 for the unprefixed property.WebView on iOS: Does not support decimal values. See bug 296785.
css.properties.initial-letter.normal 📋Edge2/9/20231134
css.properties.inline-size.fit-content_function Firefox8/10/20211682
css.properties.inline-size.stretch 📋Edge6/26/2025266
css.properties.interactivity 📋Edge4/4/2025349
css.properties.interactivity.auto 📋Edge4/4/2025349
css.properties.interactivity.inert 📋Edge4/4/2025349
css.properties.interest-delay 📋Edge10/31/2025139
css.properties.interest-delay.normal 📋Edge10/31/2025139
css.properties.interest-delay-end 📋Edge10/31/2025139
css.properties.interest-delay-end.normal 📋Edge10/31/2025139
css.properties.interest-delay-start 📋Edge10/31/2025139
css.properties.interest-delay-start.normal 📋Edge10/31/2025139
css.properties.interpolate-size 📋Edge9/19/2024546
css.properties.interpolate-size.allow-keywords 📋Edge9/19/2024546
css.properties.interpolate-size.numeric-only 📋Edge9/19/2024546
css.properties.justify-items.block_context 📋Edge10/17/2024518
css.properties.justify-self.block_context 📋Edge10/17/2024518
css.properties.line-clamp.none Firefox7/9/20192445
css.properties.list-style.symbols 📋Firefox1/13/20154083
css.properties.list-style-type.afar Edge5/27/20211757
css.properties.list-style-type.amharic Edge5/27/20211757
css.properties.list-style-type.amharic-abegede Edge5/27/20211757
css.properties.list-style-type.asterisks Edge5/27/20211757
css.properties.list-style-type.binary Edge5/27/20211757
css.properties.list-style-type.ethiopic Edge5/27/20211757
css.properties.list-style-type.ethiopic-abegede Edge5/27/20211757
css.properties.list-style-type.ethiopic-abegede-am-et Edge5/27/20211757
css.properties.list-style-type.ethiopic-abegede-gez Edge5/27/20211757
css.properties.list-style-type.ethiopic-abegede-ti-er Edge5/27/20211757
css.properties.list-style-type.ethiopic-abegede-ti-et Edge5/27/20211757
css.properties.list-style-type.ethiopic-halehame-aa-er Edge5/27/20211757
css.properties.list-style-type.ethiopic-halehame-aa-et Edge5/27/20211757
css.properties.list-style-type.ethiopic-halehame-am-et Edge5/27/20211757
css.properties.list-style-type.ethiopic-halehame-gez Edge5/27/20211757
css.properties.list-style-type.ethiopic-halehame-om-et Edge5/27/20211757
css.properties.list-style-type.ethiopic-halehame-sid-et Edge5/27/20211757
css.properties.list-style-type.ethiopic-halehame-so-et Edge5/27/20211757
css.properties.list-style-type.ethiopic-halehame-tig Edge5/27/20211757
css.properties.list-style-type.footnotes Edge5/27/20211757
css.properties.list-style-type.lower-hexadecimal Edge5/27/20211757
css.properties.list-style-type.lower-norwegian Edge5/27/20211757
css.properties.list-style-type.octal Edge5/27/20211757
css.properties.list-style-type.oromo Edge5/27/20211757
css.properties.list-style-type.sidama Edge5/27/20211757
css.properties.list-style-type.somali Edge5/27/20211757
css.properties.list-style-type.symbols 📋Firefox1/13/20154083
css.properties.list-style-type.tigre Edge5/27/20211757
css.properties.list-style-type.tigrinya-er Edge5/27/20211757
css.properties.list-style-type.tigrinya-er-abegede Edge5/27/20211757
css.properties.list-style-type.tigrinya-et Edge5/27/20211757
css.properties.list-style-type.tigrinya-et-abegede Edge5/27/20211757
css.properties.list-style-type.upper-greek Edge5/27/20211757
css.properties.list-style-type.upper-hexadecimal Edge5/27/20211757
css.properties.list-style-type.upper-norwegian Edge5/27/20211757
css.properties.mask-border 📋Edge1/15/20202255
css.properties.mask-border-outset 📋Edge1/15/20202255
css.properties.mask-border-repeat 📋Edge1/15/20202255
css.properties.mask-border-slice 📋Edge1/15/20202255
css.properties.mask-border-source 📋Edge1/15/20202255
css.properties.mask-border-width 📋Edge1/15/20202255
css.properties.mask-clip.border Edge1/15/20202255
Chrome: Only works when using -webkit-mask-clip.Chrome Android: Only works when using -webkit-mask-clip.Edge: Only works when using -webkit-mask-clip.Quest Browser: Only works when using -webkit-mask-clip.Opera: Only works when using -webkit-mask-clip.Opera Android: Only works when using -webkit-mask-clip.Samsung Internet: Only works when using -webkit-mask-clip.
css.properties.mask-clip.content Edge1/15/20202255
Chrome: Only works when using -webkit-mask-clip.Chrome Android: Only works when using -webkit-mask-clip.Edge: Only works when using -webkit-mask-clip.Quest Browser: Only works when using -webkit-mask-clip.Opera: Only works when using -webkit-mask-clip.Opera Android: Only works when using -webkit-mask-clip.Samsung Internet: Only works when using -webkit-mask-clip.
css.properties.mask-clip.padding Edge1/15/20202255
Chrome: Only works when using -webkit-mask-clip.Chrome Android: Only works when using -webkit-mask-clip.Edge: Only works when using -webkit-mask-clip.Quest Browser: Only works when using -webkit-mask-clip.Opera: Only works when using -webkit-mask-clip.Opera Android: Only works when using -webkit-mask-clip.Samsung Internet: Only works when using -webkit-mask-clip.
css.properties.mask-clip.text Edge1/15/20202255
Chrome: Only works when using -webkit-mask-clip.Chrome Android: Only works when using -webkit-mask-clip.Edge: Only works when using -webkit-mask-clip.Quest Browser: Only works when using -webkit-mask-clip.Opera: Only works when using -webkit-mask-clip.Opera Android: Only works when using -webkit-mask-clip.Samsung Internet: Only works when using -webkit-mask-clip.
css.properties.mask-origin.border Edge1/15/20202255
css.properties.mask-origin.content Edge1/15/20202255
css.properties.mask-origin.padding Edge1/15/20202255
css.properties.max-block-size.fit-content_function Firefox8/10/20211682
css.properties.max-block-size.stretch 📋Edge6/26/2025266
css.properties.max-height.fit-content_function 📋Firefox8/10/20211682
css.properties.max-height.stretch 📋Edge6/26/2025266
css.properties.max-inline-size.fit-content_function Firefox8/10/20211682
css.properties.max-inline-size.stretch 📋Edge6/26/2025266
css.properties.max-width.fit-content_function 📋Firefox8/10/20211682
css.properties.max-width.stretch 📋Edge6/26/2025266
css.properties.min-block-size.fit-content_function Firefox8/10/20211682
css.properties.min-block-size.stretch 📋Edge6/26/2025266
css.properties.min-height.fit-content_function 📋Firefox8/10/20211682
css.properties.min-height.stretch Edge6/26/2025266
css.properties.min-inline-size.fit-content_function Firefox8/10/20211682
css.properties.min-inline-size.stretch 📋Edge6/26/2025266
css.properties.min-width.fit-content_function 📋Firefox8/10/20211682
css.properties.min-width.stretch Edge6/26/2025266
css.properties.object-view-box 📋Edge8/5/20221322
css.properties.object-view-box.none 📋Edge8/5/20221322
css.properties.orphans 📋Edge7/29/20153886
css.properties.overlay 📋Edge9/15/2023916
css.properties.overlay.auto 📋Edge9/15/2023916
css.properties.overlay.none 📋Edge9/15/2023916
css.properties.page-break-after.avoid 📋Edge7/29/20153886
css.properties.page-break-before.avoid 📋Edge7/29/20153886
css.properties.pointer-events.bounding-box 📋Edge1/15/20202255
css.properties.position-visibility.anchors-valid 📋Firefox1/13/202665
css.properties.reading-flow 📋Edge5/29/2025294
css.properties.reading-flow.flex-flow 📋Edge5/29/2025294
css.properties.reading-flow.flex-visual 📋Edge5/29/2025294
css.properties.reading-flow.grid-columns 📋Edge5/29/2025294
css.properties.reading-flow.grid-order 📋Edge5/29/2025294
css.properties.reading-flow.grid-rows 📋Edge5/29/2025294
css.properties.reading-flow.normal 📋Edge5/29/2025294
css.properties.reading-flow.source-order 📋Edge5/29/2025294
css.properties.reading-order 📋Edge5/29/2025294
css.properties.ruby-position.alternate Firefox4/19/20211795
css.properties.ruby-position.inter-character Edge7/16/20202072
Chrome: This value is only supported with the prefixed version of the property.Chrome Android: This value is only supported with the prefixed version of the property.Edge: This value is only supported with the prefixed version of the property.Quest Browser: This value is only supported with the prefixed version of the property.Opera: This value is only supported with the prefixed version of the property.Opera Android: This value is only supported with the prefixed version of the property.Samsung Internet: This value is only supported with the prefixed version of the property.WebView Android: This value is only supported with the prefixed version of the property.
css.properties.scroll-initial-target 📋Edge2/6/2025406
css.properties.scroll-initial-target.nearest 📋Edge2/6/2025406
css.properties.scroll-initial-target.none 📋Edge2/6/2025406
css.properties.scroll-marker-group 📋Edge4/4/2025349
css.properties.scroll-marker-group.after 📋Edge4/4/2025349
css.properties.scroll-marker-group.before 📋Edge4/4/2025349
css.properties.scroll-marker-group.none 📋Edge4/4/2025349
css.properties.scroll-target-group 📋Edge9/5/2025195
css.properties.scroll-target-group.auto 📋Edge9/5/2025195
css.properties.scroll-target-group.none 📋Edge9/5/2025195
css.properties.scroll-timeline.none 📋Edge7/21/2023972
css.properties.scroll-timeline-axis.block 📋Edge7/21/2023972
css.properties.scroll-timeline-axis.inline 📋Edge7/21/2023972
css.properties.scroll-timeline-axis.x 📋Edge7/21/2023972
css.properties.scroll-timeline-axis.y 📋Edge7/21/2023972
css.properties.scroll-timeline-name.none 📋Edge7/21/2023972
css.properties.speak 📋Edge2/7/20202232
Chrome: The implementation is not compliant with the specification, see bug 40813740.Chrome Android: The implementation is not compliant with the specification, see bug 40813740.Edge: The implementation is not compliant with the specification, see bug 40813740.Quest Browser: The implementation is not compliant with the specification, see bug 40813740.Opera: The implementation is not compliant with the specification, see bug 40813740.Opera Android: The implementation is not compliant with the specification, see bug 40813740.Samsung Internet: The implementation is not compliant with the specification, see bug 40813740.WebView Android: The implementation is not compliant with the specification, see bug 40813740.
css.properties.text-autospace.auto 📋Firefox11/11/2025128
css.properties.text-autospace.ideograph-alpha 📋Firefox11/11/2025128
css.properties.text-autospace.ideograph-numeric 📋Firefox11/11/2025128
css.properties.text-autospace.insert 📋Firefox11/11/2025128
css.properties.text-box 📋Edge2/6/2025406
css.properties.text-box.auto 📋Edge2/6/2025406
css.properties.text-box.none 📋Edge2/6/2025406
css.properties.text-box.normal 📋Edge2/6/2025406
css.properties.text-box.text 📋Edge2/6/2025406
css.properties.text-box.trim-both 📋Edge2/6/2025406
css.properties.text-box.trim-end 📋Edge2/6/2025406
css.properties.text-box.trim-start 📋Edge2/6/2025406
css.properties.text-box-edge 📋Edge2/6/2025406
css.properties.text-box-edge.auto 📋Edge2/6/2025406
css.properties.text-box-edge.text 📋Edge2/6/2025406
css.properties.text-box-trim 📋Edge2/6/2025406
css.properties.text-box-trim.none 📋Edge2/6/2025406
css.properties.text-box-trim.trim-both 📋Edge2/6/2025406
css.properties.text-box-trim.trim-end 📋Edge2/6/2025406
css.properties.text-box-trim.trim-start 📋Edge2/6/2025406
css.properties.text-decoration-inset 📋Firefox12/9/2025100
css.properties.text-decoration-inset.auto 📋Firefox12/9/2025100
css.properties.text-decoration-skip-ink.all 📋Firefox4/7/20202172
css.properties.text-emphasis-position.auto Firefox10/29/2024506
css.properties.text-overflow.string Firefox12/20/20115203
css.properties.text-overflow.two_value_syntax Firefox12/20/20115203
css.properties.text-size-adjust 📋Edge1/15/20202255
css.properties.text-size-adjust.auto 📋Edge1/15/20202255
css.properties.text-size-adjust.none 📋Edge1/15/20202255
css.properties.text-size-adjust.percentages 📋Edge7/29/20153886
css.properties.text-spacing-trim 📋Edge3/22/2024727
css.properties.text-spacing-trim.normal 📋Edge3/22/2024727
css.properties.text-spacing-trim.space-all 📋Edge3/22/2024727
css.properties.text-spacing-trim.space-first 📋Edge3/22/2024727
css.properties.text-spacing-trim.trim-start 📋Edge3/22/2024727
css.properties.text-transform.dutch_ij_digraph Firefox7/17/20124993
css.properties.text-transform.full-size-kana 📋Firefox12/11/20182655
css.properties.text-transform.full-width 📋Firefox2/19/20134776
css.properties.text-wrap.pretty 📋Edge9/15/2023916
css.properties.text-wrap-style.pretty 📋Edge10/17/2024518
css.properties.timeline-scope 📋Edge8/21/2023941
css.properties.timeline-scope.none 📋Edge8/21/2023941
css.properties.timeline-trigger 📋Edge3/12/20267
css.properties.timeline-trigger.auto 📋Edge3/12/20267
css.properties.timeline-trigger.none 📋Edge3/12/20267
css.properties.timeline-trigger.normal 📋Edge3/12/20267
css.properties.timeline-trigger-name 📋Edge3/12/20267
css.properties.timeline-trigger-name.none 📋Edge3/12/20267
css.properties.timeline-trigger-source 📋Edge3/12/20267
css.properties.timeline-trigger-source.auto 📋Edge3/12/20267
css.properties.timeline-trigger-source.none 📋Edge3/12/20267
css.properties.touch-action.pan-down Edge1/15/20202255
css.properties.touch-action.pan-left Edge1/15/20202255
css.properties.touch-action.pan-right Edge1/15/20202255
css.properties.touch-action.pan-up Edge1/15/20202255
css.properties.transition-behavior.transitionable_content-visibility 📋Edge9/15/2023916
css.properties.transition-behavior.transitionable_display 📋Edge9/15/2023916
css.properties.trigger-scope 📋Edge3/12/20267
css.properties.trigger-scope.all 📋Edge3/12/20267
css.properties.trigger-scope.none 📋Edge3/12/20267
css.properties.user-modify Edge7/29/20153886
Firefox: While the CSS property is parsed and accepted, it does not have any effect.Firefox for Android: While the CSS property is parsed and accepted, it does not have any effect.
css.properties.user-modify.read-write-plaintext-only Edge7/29/20153886
css.properties.view-timeline.none 📋Edge7/21/2023972
css.properties.view-timeline-axis.block 📋Edge7/21/2023972
css.properties.view-timeline-axis.inline 📋Edge7/21/2023972
css.properties.view-timeline-axis.x 📋Edge7/21/2023972
css.properties.view-timeline-axis.y 📋Edge7/21/2023972
css.properties.view-timeline-inset 📋Edge7/21/2023972
css.properties.view-timeline-inset.auto 📋Edge7/21/2023972
css.properties.view-timeline-name.none 📋Edge7/21/2023972
css.properties.view-transition-group 📋Edge9/5/2025195
css.properties.view-transition-group.contain Edge9/5/2025195
css.properties.view-transition-group.nearest Edge9/5/2025195
css.properties.view-transition-group.normal Edge9/5/2025195
css.properties.white-space.preserve-spaces 📋Firefox3/19/2024730
css.properties.white-space.svg_elements Firefox2/24/20154041
css.properties.white-space-collapse.preserve-spaces 📋Firefox3/19/2024730
css.properties.widows 📋Edge7/29/20153886
css.properties.width.fit-content_function 📋Firefox8/10/20211682
css.properties.word-break.auto-phrase 📋Edge11/2/2023868
Chrome: This value is only applicable if lang="ja" is specified. This value has no effect on other locales.Chrome Android: This value is only applicable if lang="ja" is specified. This value has no effect on other locales.Edge: This value is only applicable if lang="ja" is specified. This value has no effect on other locales.Opera: This value is only applicable if lang="ja" is specified. This value has no effect on other locales.Opera Android: This value is only applicable if lang="ja" is specified. This value has no effect on other locales.Samsung Internet: This value is only applicable if lang="ja" is specified. This value has no effect on other locales.WebView Android: This value is only applicable if lang="ja" is specified. This value has no effect on other locales.
css.selectors.-moz-color-swatch Firefox2/4/20144426
css.selectors.-moz-first-node Firefox8/8/20173145
css.selectors.-moz-last-node Firefox8/8/20173145
css.selectors.-moz-list-bullet Firefox11/9/20047800
css.selectors.-moz-list-number Firefox11/9/20047800
css.selectors.-moz-only-whitespace Firefox11/9/20047800
css.selectors.-moz-progress-bar Firefox8/16/20115329
css.selectors.-moz-range-progress Firefox6/25/20134650
css.selectors.-moz-range-thumb Firefox5/14/20134692
css.selectors.-moz-range-track Firefox5/14/20134692
css.selectors.-moz-submit-invalid Firefox4/19/20211795
Firefox: From Firefox 88 the feature has been placed behind a flag. See bug 1694129.Firefox for Android: From version 88, the feature has been withdrawn. See bug 1694129.
css.selectors.-moz-window-inactive Firefox3/22/20115476
css.selectors.-webkit-inner-spin-button Edge1/15/20202255
css.selectors.-webkit-meter-bar Edge1/15/20202255
css.selectors.-webkit-meter-even-less-good-value Edge1/15/20202255
css.selectors.-webkit-meter-inner-element Edge1/15/20202255
css.selectors.-webkit-meter-optimum-value Edge1/15/20202255
css.selectors.-webkit-meter-suboptimum-value Edge1/15/20202255
css.selectors.-webkit-progress-bar Edge1/15/20202255
css.selectors.-webkit-progress-inner-element Edge1/15/20202255
css.selectors.-webkit-progress-value Edge1/15/20202255
css.selectors.-webkit-resizer Edge1/15/20202255
css.selectors.-webkit-scrollbar Edge1/15/20202255
Safari on iOS: From Safari 13, only display: none works with this pseudo-element. Other styles have no effect.WebView on iOS: From Safari 13, only display: none works with this pseudo-element. Other styles have no effect.
css.selectors.-webkit-scrollbar-button Edge1/15/20202255
css.selectors.-webkit-scrollbar-corner Edge1/15/20202255
css.selectors.-webkit-scrollbar-thumb Edge1/15/20202255
css.selectors.-webkit-scrollbar-track Edge1/15/20202255
css.selectors.-webkit-scrollbar-track-piece Edge1/15/20202255
css.selectors.-webkit-search-cancel-button Edge1/15/20202255
css.selectors.-webkit-search-results-button Edge1/15/20202255
css.selectors.-webkit-slider-runnable-track Edge1/15/20202255
css.selectors.-webkit-slider-thumb Edge1/15/20202255
css.selectors.attribute.case_sensitive_modifier Firefox3/19/20192557
css.selectors.checkmark 📋Edge2/6/2025406
css.selectors.column 📋Edge4/4/2025349
css.selectors.column.nested_scroll-marker Edge4/4/2025349
css.selectors.cue.selector_argument Edge1/15/20202255
css.selectors.first-letter.dutch_ij_digraph Firefox3/23/20211822
css.selectors.first-letter.svg_text_element Firefox3/19/2024730
css.selectors.first-line.svg_text_element Firefox3/19/2024730
css.selectors.fullscreen.all_elements Firefox12/15/20153747
css.selectors.future 📋Edge1/15/20202255
css.selectors.grammar-error 📋Edge1/25/2024784
css.selectors.has-slotted 📋Firefox3/4/2025380
css.selectors.host-context 📋Edge1/15/20202255
css.selectors.interest-source 📋Edge10/31/2025139
css.selectors.interest-target 📋Edge10/31/2025139
css.selectors.lang.argument_list Firefox6/6/20231017
css.selectors.lang.wildcards Firefox6/6/20231017
css.selectors.left 📋Edge7/29/20153886
css.selectors.marker.counter_support 📋Firefox1/13/202665
css.selectors.marker.quotes_support 📋Firefox1/13/202665
css.selectors.past 📋Edge1/15/20202255
css.selectors.picker 📋Edge4/4/2025349
css.selectors.picker-icon 📋Edge2/6/2025406
css.selectors.picture-in-picture 📋Edge2/9/20231134
css.selectors.right 📋Edge7/29/20153886
css.selectors.scroll-button 📋Edge4/4/2025349
css.selectors.scroll-button.block-end 📋Edge4/4/2025349
css.selectors.scroll-button.block-start 📋Edge4/4/2025349
css.selectors.scroll-button.down 📋Edge4/4/2025349
css.selectors.scroll-button.inline-end 📋Edge4/4/2025349
css.selectors.scroll-button.inline-start 📋Edge4/4/2025349
css.selectors.scroll-button.left 📋Edge4/4/2025349
css.selectors.scroll-button.right 📋Edge4/4/2025349
css.selectors.scroll-button.star 📋Edge4/4/2025349
css.selectors.scroll-button.up 📋Edge4/4/2025349
css.selectors.scroll-marker 📋Edge4/4/2025349
css.selectors.scroll-marker-group 📋Edge4/4/2025349
css.selectors.search-text 📋Edge1/21/202657
css.selectors.selection.text-decoration Edge9/1/20221295
css.selectors.spelling-error 📋Edge1/25/2024784
css.selectors.target-after 📋Edge10/31/2025139
css.selectors.target-before 📋Edge10/31/2025139
css.selectors.target-current 📋Edge4/4/2025349
css.selectors.view-transition-group-children 📋Edge9/5/2025195
css.selectors.xr-overlay 📋Edge5/21/20202128
css.types.anchor-size.inset_margin Edge1/17/2025426
css.types.attr.type_function 📋Edge2/6/2025406
css.types.attr.type_function.angle 📋Edge2/6/2025406
css.types.attr.type_function.color 📋Edge2/6/2025406
css.types.attr.type_function.custom-ident 📋Edge2/6/2025406
css.types.attr.type_function.ident 📋Edge2/6/2025406
css.types.attr.type_function.image 📋Edge2/6/2025406
css.types.attr.type_function.integer 📋Edge2/6/2025406
css.types.attr.type_function.length 📋Edge2/6/2025406
css.types.attr.type_function.length-percentage 📋Edge2/6/2025406
css.types.attr.type_function.number 📋Edge2/6/2025406
css.types.attr.type_function.percentage 📋Edge2/6/2025406
css.types.attr.type_function.resolution 📋Edge2/6/2025406
css.types.attr.type_function.string 📋Edge2/6/2025406
css.types.attr.type_function.time 📋Edge2/6/2025406
css.types.attr.type_function.transform-function 📋Edge2/6/2025406
css.types.attr.type_function.url 📋Edge2/6/2025406
css.types.calc.typed_division_produces_unitless_number 📋Edge9/5/2025195
css.types.calc-size 📋Edge9/19/2024546
css.types.color.contrast-color 📋Firefox12/9/2025100
css.types.corner-shape-value 📋Edge8/7/2025224
css.types.corner-shape-value.bevel 📋Edge8/7/2025224
css.types.corner-shape-value.notch 📋Edge8/7/2025224
css.types.corner-shape-value.round 📋Edge8/7/2025224
css.types.corner-shape-value.scoop 📋Edge8/7/2025224
css.types.corner-shape-value.square 📋Edge8/7/2025224
css.types.corner-shape-value.squircle 📋Edge8/7/2025224
css.types.corner-shape-value.superellipse 📋Edge8/7/2025224
css.types.dashed-function 📋Edge8/7/2025224
css.types.dynamic-range-limit-mix 📋Edge5/1/2025322
css.types.env.keyboard-inset-bottom 📋Edge9/24/20211637
css.types.env.keyboard-inset-height 📋Edge9/24/20211637
css.types.env.keyboard-inset-left 📋Edge9/24/20211637
css.types.env.keyboard-inset-right 📋Edge9/24/20211637
css.types.env.keyboard-inset-top 📋Edge9/24/20211637
css.types.env.keyboard-inset-width 📋Edge9/24/20211637
css.types.env.titlebar-area-height 📋Edge9/2/20211659
Chrome: Before version 93, Linux is unsupported.Chrome Android: Before version 93, Linux is unsupported.Edge: Before version 93, Linux is unsupported.
css.types.env.titlebar-area-width 📋Edge9/2/20211659
Chrome: Before version 93, Linux is unsupported.Chrome Android: Before version 93, Linux is unsupported.Edge: Before version 93, Linux is unsupported.
css.types.env.titlebar-area-x 📋Edge9/2/20211659
Chrome: Before version 93, Linux is unsupported.Chrome Android: Before version 93, Linux is unsupported.Edge: Before version 93, Linux is unsupported.
css.types.env.titlebar-area-y 📋Edge9/2/20211659
Chrome: Before version 93, Linux is unsupported.Chrome Android: Before version 93, Linux is unsupported.Edge: Before version 93, Linux is unsupported.
css.types.env.viewport-segment-bottom 📋Edge6/26/2025266
css.types.env.viewport-segment-height 📋Edge6/26/2025266
css.types.env.viewport-segment-left 📋Edge6/26/2025266
css.types.env.viewport-segment-right 📋Edge6/26/2025266
css.types.env.viewport-segment-top 📋Edge6/26/2025266
css.types.env.viewport-segment-width 📋Edge6/26/2025266
css.types.if 📋Edge5/29/2025294
css.types.if.style Edge5/29/2025294
css.types.if.style.range_syntax 📋Edge10/31/2025139
css.types.image.cross-fade 📋Edge1/15/20202255
Chrome: Supports the original dual-image with percentage implementation only.Chrome: See bug 40470742 for supporting the unprefixed cross-fade() function.Chrome Android: Supports the original dual-image with percentage implementation only.Chrome Android: See bug 40470742 for supporting the unprefixed cross-fade() function.Edge: Supports the original dual-image with percentage implementation only.Edge: See bug 40470742 for supporting the unprefixed cross-fade() function.Quest Browser: Supports the original dual-image with percentage implementation only.Quest Browser: See bug 40470742 for supporting the unprefixed cross-fade() function.Opera: Supports the original dual-image with percentage implementation only.Opera: See bug 40470742 for supporting the unprefixed cross-fade() function.Opera Android: Supports the original dual-image with percentage implementation only.Opera Android: See bug 40470742 for supporting the unprefixed cross-fade() function.Safari: Supports the original dual-image with percentage implementation only.Safari: Supports the original dual-image with percentage implementation only.Safari on iOS: Support for the original dual-image with percentage implementation only.Safari on iOS: Supports the original dual-image with percentage implementation only.Samsung Internet: Supports the original dual-image with percentage implementation only.Samsung Internet: See bug 40470742 for supporting the unprefixed cross-fade() function.WebView Android: Supports the original dual-image with percentage implementation only.WebView Android: See bug 40470742 for supporting the unprefixed cross-fade() function.WebView on iOS: Support for the original dual-image with percentage implementation only.WebView on iOS: Supports the original dual-image with percentage implementation only.
css.types.image.element 📋Firefox11/14/20173047
Firefox: -moz-element() is limited to background-image, background, border-image and border-image-source.Firefox: -moz-element() is limited to background-image and background.Firefox for Android: -moz-element() is limited to background-image, background, border-image and border-image-source.Firefox for Android: -moz-element() is limited to background-image and background.
css.types.image.paint 📋Edge1/15/20202255
css.types.progress 📋Edge6/26/2025266
css.types.ratio.number_value Firefox6/30/20202088
css.types.sibling-count 📋Edge6/26/2025266
css.types.sibling-index 📋Edge6/26/2025266
css.types.sign.typed_division_produces_unitless_number 📋Edge9/5/2025195
css.types.superellipse 📋Edge8/7/2025224
css.types.text-edge 📋Edge2/6/2025406
css.types.text-edge.alphabetic 📋Edge2/6/2025406
css.types.text-edge.cap 📋Edge2/6/2025406
css.types.text-edge.ex 📋Edge2/6/2025406
css.types.text-edge.text 📋Edge2/6/2025406
css.types.type 📋Edge8/7/2025224