For a given set of browsers, what APIs are not yet in all of them.
| Not in Edge | Not in Firefox | |
|---|---|---|
| In Edge | 456 | |
| In Firefox | 146 |
Below is a list of features that are not in all of Edge and Firefox
| API | First Browser | Date | Days in Limbo | Notes |
|---|---|---|---|---|
| css.at-rules.container.style_queries_for_custom_properties 📋 | Edge | 3/13/2023 | 1310 | 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.document | Firefox | 6/26/2018 | 3031 | 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 | Edge | 1/15/2020 | 2463 | |
| css.at-rules.font-face.OpenType_SBIX | Edge | 1/15/2020 | 2463 | |
| css.at-rules.font-face.OpenType_SVG | Firefox | 7/22/2014 | 4466 | |
| css.at-rules.font-face.font-feature-settings 📋 | Firefox | 12/1/2014 | 4334 | Firefox: The ISO/IEC CD 14496-22 3rd edition suggests using the ssty feature to provide glyph variants more suitable for use in scripts (for example primes used as superscripts). Starting with Firefox 29, this is done automatically by the MathML rendering engine. The ISO/IEC CD 14496-22 3rd edition also suggests applying the dtls feature to letters when placing mathematical accents to get dotless forms (for example dotless i, j with a hat). Starting with Firefox 35, this is done automatically by the MathML rendering engine. You can override the default values determined by the MathML rendering engine with CSS.Firefox: From Firefox 4 to Firefox 14 (inclusive), Firefox supported an older, slightly different syntax. See OpenType Font Feature support in Firefox 4.Firefox for Android: The ISO/IEC CD 14496-22 3rd edition suggests using the ssty feature to provide glyph variants more suitable for use in scripts (for example primes used as superscripts). Starting with Firefox for Android 29, this is done automatically by the MathML rendering engine. The ISO/IEC CD 14496-22 3rd edition also suggests applying the dtls feature to letters when placing mathematical accents to get dotless forms (for example dotless i, j with a hat). Starting with Firefox for Android 35, this is done automatically by the MathML rendering engine. You can override the default values determined by the MathML rendering engine with CSS.Firefox for Android: From Firefox for Android 4 to Firefox for Android 14 (inclusive), Firefox for Android supported an older, slightly different syntax. See OpenType Font Feature support in Firefox for Android 4. |
| css.at-rules.font-face.font-variation-settings 📋 | Firefox | 9/5/2018 | 2960 | |
| css.at-rules.font-face.src.format_keyword | Edge | 12/5/2022 | 1408 | |
| css.at-rules.keyframes.named_range_keyframes 📋 | Edge | 7/21/2023 | 1180 | |
| css.at-rules.media.-moz-device-pixel-ratio | Firefox | 3/22/2011 | 5684 | |
| css.at-rules.media.color-index 📋 | Edge | 1/15/2020 | 2463 | |
| css.at-rules.media.display-mode.picture-in-picture 📋 | Edge | 3/22/2024 | 935 | |
| css.at-rules.media.inverted-colors 📋 | Firefox | 6/6/2023 | 1225 | |
| css.at-rules.media.prefers-reduced-data 📋 | Edge | 8/27/2020 | 2238 | |
| css.at-rules.page.bottom-center 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.bottom-left 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.bottom-left-corner 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.bottom-right 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.bottom-right-corner 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.left-bottom 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.left-middle 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.left-top 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.right-bottom 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.right-middle 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.right-top 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.top-center 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.top-left 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.top-left-corner 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.top-right 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.page.top-right-corner 📋 | Edge | 11/14/2024 | 698 | |
| css.at-rules.position-try 📋 | Edge | 5/17/2024 | 879 | |
| css.at-rules.view-transition 📋 | Edge | 6/13/2024 | 852 | |
| css.properties.-moz-float-edge | Firefox | 11/9/2004 | 8008 | |
| css.properties.-moz-force-broken-image-icon | Firefox | 11/9/2004 | 8008 | |
| css.properties.-moz-orient | Firefox | 8/16/2011 | 5537 | |
| css.properties.-moz-orient.block | Firefox | 8/11/2015 | 4081 | |
| css.properties.-moz-orient.inline | Firefox | 8/11/2015 | 4081 | |
| css.properties.-webkit-app-region | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-border-before | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-border-horizontal-spacing | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-border-vertical-spacing | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-box-reflect | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-column-break-after | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-column-break-before | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-column-break-inside | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-locale | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-logical-height | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-logical-width | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-margin-after | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-margin-before | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-mask-box-image | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-mask-composite | Edge | 10/2/2018 | 2933 | |
| css.properties.-webkit-max-logical-height | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-max-logical-width | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-min-logical-height | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-min-logical-width | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-perspective-origin-x | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-perspective-origin-y | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-rtl-ordering | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-tap-highlight-color | Edge | 7/29/2015 | 4094 | |
| css.properties.-webkit-text-combine | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-text-decorations-in-effect | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-transform-origin-x | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-transform-origin-y | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-transform-origin-z | Edge | 1/15/2020 | 2463 | |
| css.properties.-webkit-user-drag | Edge | 1/15/2020 | 2463 | |
| css.properties.align-content.flex_context.last_baseline | Firefox | 3/7/2017 | 3507 | 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 📋 | Edge | 3/22/2024 | 935 | |
| css.properties.align-items.anchor-center 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.align-self.anchor-center 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.alignment-baseline 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.alignment-baseline.alphabetic | Edge | 2/7/2020 | 2440 | |
| css.properties.alignment-baseline.baseline | Edge | 1/15/2020 | 2463 | |
| css.properties.alignment-baseline.central | Edge | 1/15/2020 | 2463 | |
| css.properties.alignment-baseline.ideographic | Edge | 1/15/2020 | 2463 | |
| css.properties.alignment-baseline.mathematical | Edge | 1/15/2020 | 2463 | |
| css.properties.alignment-baseline.middle | Edge | 1/15/2020 | 2463 | |
| css.properties.anchor-name 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.anchor-name.none 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.anchor-scope 📋 | Edge | 11/14/2024 | 698 | |
| css.properties.anchor-scope.all 📋 | Edge | 11/14/2024 | 698 | |
| css.properties.anchor-scope.none 📋 | Edge | 11/14/2024 | 698 | |
| css.properties.animation.animation-timeline_included | Edge | 7/21/2023 | 1180 | 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 📋 | Edge | 7/21/2023 | 1180 | 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 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.animation-range-end 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.animation-range-end.normal 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.animation-range-start 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.animation-range-start.normal 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.background-image.element 📋 | Firefox | 3/22/2011 | 5684 | |
| css.properties.background-position-x.side-relative_values | Firefox | 9/20/2016 | 3675 | |
| css.properties.background-position-y.side-relative_values | Firefox | 9/20/2016 | 3675 | |
| css.properties.baseline-shift 📋 | Edge | 2/7/2020 | 2440 | |
| css.properties.baseline-shift.baseline 📋 | Edge | 2/7/2020 | 2440 | |
| css.properties.baseline-shift.sub 📋 | Edge | 2/7/2020 | 2440 | |
| css.properties.baseline-shift.super 📋 | Edge | 2/7/2020 | 2440 | |
| css.properties.block-size.anchor-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.block-size.fit-content_function | Firefox | 8/10/2021 | 1890 | |
| css.properties.bottom.anchor 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.bottom.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.break-after.always | Firefox | 1/7/2020 | 2471 | |
| css.properties.break-after.avoid-column | Edge | 2/7/2020 | 2440 | |
| css.properties.break-after.avoid-page | Edge | 2/7/2020 | 2440 | |
| css.properties.break-after.column | Edge | 2/7/2020 | 2440 | |
| css.properties.break-after.multicol_context.always | Firefox | 1/29/2019 | 2814 | 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 | Edge | 5/31/2022 | 1596 | |
| css.properties.break-after.multicol_context.avoid-column | Edge | 5/31/2022 | 1596 | |
| css.properties.break-after.multicol_context.column | Edge | 7/29/2015 | 4094 | |
| css.properties.break-after.paged_context.always | Firefox | 1/29/2019 | 2814 | |
| css.properties.break-after.paged_context.avoid-page | Edge | 7/29/2015 | 4094 | |
| css.properties.break-after.recto | Edge | 2/7/2020 | 2440 | |
| css.properties.break-after.verso | Edge | 2/7/2020 | 2440 | |
| css.properties.break-before.always | Firefox | 1/7/2020 | 2471 | |
| css.properties.break-before.avoid-column | Edge | 2/7/2020 | 2440 | |
| css.properties.break-before.avoid-page | Edge | 2/7/2020 | 2440 | |
| css.properties.break-before.column | Edge | 2/7/2020 | 2440 | |
| css.properties.break-before.multicol_context.always | Firefox | 1/29/2019 | 2814 | 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 | Edge | 5/31/2022 | 1596 | |
| css.properties.break-before.multicol_context.avoid-column | Edge | 5/31/2022 | 1596 | |
| css.properties.break-before.multicol_context.column | Edge | 7/29/2015 | 4094 | |
| css.properties.break-before.paged_context.always | Firefox | 1/29/2019 | 2814 | |
| css.properties.break-before.recto | Edge | 2/7/2020 | 2440 | |
| css.properties.break-before.verso | Edge | 2/7/2020 | 2440 | |
| css.properties.caption-side.writing-mode_relative_values | Firefox | 11/3/2015 | 3997 | |
| css.properties.color-adjust 📋 | Firefox | 1/7/2020 | 2471 | |
| css.properties.color-interpolation.linearGradient | Firefox | 2/20/2024 | 966 | |
| css.properties.container-type.scroll-state 📋 | Edge | 2/6/2025 | 614 | |
| css.properties.content.none_applies_to_elements | Firefox | 8/10/2021 | 1890 | |
| css.properties.content-visibility.is_transitionable 📋 | Edge | 9/15/2023 | 1124 | |
| css.properties.content-visibility.keyframe_animatable 📋 | Edge | 8/21/2023 | 1149 | |
| css.properties.counter-reset.reset_does_not_affect_siblings | Firefox | 10/20/2020 | 2184 | |
| css.properties.counter-reset.reversed 📋 | Firefox | 1/11/2022 | 1736 | |
| css.properties.custom-property.env.titlebar-area-height 📋 | Edge | 9/2/2021 | 1867 | Chrome: Before version 93, Linux is unsupported.Chrome Android: Before version 93, Linux is unsupported.Edge: Before version 93, Linux is unsupported. |
| css.properties.custom-property.env.titlebar-area-width 📋 | Edge | 9/2/2021 | 1867 | Chrome: Before version 93, Linux is unsupported.Chrome Android: Before version 93, Linux is unsupported.Edge: Before version 93, Linux is unsupported. |
| css.properties.custom-property.env.titlebar-area-x 📋 | Edge | 9/2/2021 | 1867 | Chrome: Before version 93, Linux is unsupported.Chrome Android: Before version 93, Linux is unsupported.Edge: Before version 93, Linux is unsupported. |
| css.properties.custom-property.env.titlebar-area-y 📋 | Edge | 9/2/2021 | 1867 | Chrome: Before version 93, Linux is unsupported.Chrome Android: Before version 93, Linux is unsupported.Edge: Before version 93, Linux is unsupported. |
| css.properties.display.is_transitionable 📋 | Edge | 9/15/2023 | 1124 | |
| css.properties.display.keyframe_animatable 📋 | Edge | 8/21/2023 | 1149 | |
| css.properties.display.math | Edge | 1/12/2023 | 1370 | |
| css.properties.display.ruby | Firefox | 5/12/2015 | 4172 | |
| css.properties.display.ruby-base | Firefox | 5/12/2015 | 4172 | |
| css.properties.display.ruby-base-container | Firefox | 5/12/2015 | 4172 | |
| css.properties.display.ruby-text | Firefox | 5/12/2015 | 4172 | |
| css.properties.display.ruby-text-container | Firefox | 5/12/2015 | 4172 | |
| css.properties.field-sizing 📋 | Edge | 3/22/2024 | 935 | |
| css.properties.field-sizing.content 📋 | Edge | 3/22/2024 | 935 | |
| css.properties.field-sizing.fixed 📋 | Edge | 3/22/2024 | 935 | |
| css.properties.font-family.math | Edge | 1/12/2023 | 1370 | |
| css.properties.font-language-override 📋 | Firefox | 12/1/2014 | 4334 | |
| css.properties.font-palette.animation_computed | Edge | 1/25/2024 | 992 | |
| css.properties.font-palette.palette-mix_function 📋 | Edge | 1/25/2024 | 992 | |
| css.properties.font-synthesis.position | Firefox | 9/26/2023 | 1113 | |
| css.properties.font-synthesis-position 📋 | Firefox | 9/26/2023 | 1113 | |
| css.properties.font-synthesis-position.auto 📋 | Firefox | 9/26/2023 | 1113 | |
| css.properties.font-synthesis-position.none 📋 | Firefox | 9/26/2023 | 1113 | |
| css.properties.font-variant-emoji.emoji 📋 | Edge | 11/14/2024 | 698 | |
| css.properties.font-variant-emoji.normal 📋 | Edge | 11/14/2024 | 698 | |
| css.properties.font-variant-emoji.text 📋 | Edge | 11/14/2024 | 698 | |
| css.properties.font-variant-emoji.unicode 📋 | Edge | 11/14/2024 | 698 | |
| css.properties.font-variant-position 📋 | Firefox | 12/1/2014 | 4334 | Chrome: The property is recognized, but has no effect.Chrome Android: The property is recognized, but has no effect.Edge: The property is recognized, but has no effect.Quest Browser: The property is recognized, but has no effect.Opera: The property is recognized, but has no effect.Opera Android: The property is recognized, but has no effect.Samsung Internet: The property is recognized, but has no effect.WebView Android: The property is recognized, but has no effect. |
| css.properties.font-variant-position.normal 📋 | Firefox | 1/7/2020 | 2471 | Chrome: The property is recognized, but has no effect.Chrome Android: The property is recognized, but has no effect.Edge: The property is recognized, but has no effect.Quest Browser: The property is recognized, but has no effect.Opera: The property is recognized, but has no effect.Opera Android: The property is recognized, but has no effect.Samsung Internet: The property is recognized, but has no effect.WebView Android: The property is recognized, but has no effect. |
| css.properties.font-variant-position.sub 📋 | Firefox | 1/7/2020 | 2471 | Chrome: The property is recognized, but has no effect.Chrome Android: The property is recognized, but has no effect.Edge: The property is recognized, but has no effect.Quest Browser: The property is recognized, but has no effect.Opera: The property is recognized, but has no effect.Opera Android: The property is recognized, but has no effect.Samsung Internet: The property is recognized, but has no effect.WebView Android: The property is recognized, but has no effect. |
| css.properties.font-variant-position.super 📋 | Firefox | 1/7/2020 | 2471 | Chrome: The property is recognized, but has no effect.Chrome Android: The property is recognized, but has no effect.Edge: The property is recognized, but has no effect.Quest Browser: The property is recognized, but has no effect.Opera: The property is recognized, but has no effect.Opera Android: The property is recognized, but has no effect.Samsung Internet: The property is recognized, but has no effect.WebView Android: The property is recognized, but has no effect. |
| css.properties.forced-color-adjust.preserve-parent-color 📋 | Edge | 10/3/2022 | 1471 | |
| css.properties.grid-template-columns.masonry 📋 | Firefox | 6/2/2020 | 2324 | |
| css.properties.grid-template-rows.masonry 📋 | Firefox | 6/2/2020 | 2324 | |
| css.properties.height.anchor-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.height.fit-content_function 📋 | Firefox | 8/10/2021 | 1890 | |
| css.properties.height.stretch 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.hyphenate-limit-chars 📋 | Edge | 1/12/2023 | 1370 | |
| css.properties.hyphenate-limit-chars.auto 📋 | Edge | 1/12/2023 | 1370 | |
| css.properties.hyphens.language_albanian | Edge | 4/6/2023 | 1286 | |
| css.properties.hyphens.language_amharic | Edge | 4/6/2023 | 1286 | |
| css.properties.hyphens.language_armenian | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_assamese | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_basque | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_belarusian | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_bengali | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_bosnian | Firefox | 11/8/2011 | 5453 | |
| css.properties.hyphens.language_catalan | Firefox | 11/8/2011 | 5453 | |
| css.properties.hyphens.language_cyrillic_mongolian | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_esperanto | Firefox | 11/8/2011 | 5453 | |
| css.properties.hyphens.language_ethiopic_script_mul | Edge | 4/6/2023 | 1286 | |
| css.properties.hyphens.language_ethiopic_script_und | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_finnish | Firefox | 11/8/2011 | 5453 | |
| css.properties.hyphens.language_georgian | Edge | 4/6/2023 | 1286 | |
| css.properties.hyphens.language_gujarati | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_hindi | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_icelandic | Firefox | 11/8/2011 | 5453 | |
| css.properties.hyphens.language_interlingua | Firefox | 11/8/2011 | 5453 | |
| css.properties.hyphens.language_irish | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_kannada | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_kurmanji | Firefox | 11/8/2011 | 5453 | |
| css.properties.hyphens.language_latvian | Edge | 4/6/2023 | 1286 | |
| css.properties.hyphens.language_malayalam | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_marathi | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_modern_greek | Edge | 4/6/2023 | 1286 | |
| css.properties.hyphens.language_mongolian | Firefox | 11/8/2011 | 5453 | |
| css.properties.hyphens.language_old_slavonic | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_oriya | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_polish | Firefox | 7/22/2014 | 4466 | |
| css.properties.hyphens.language_punjabi | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_tamil | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_telugu | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_turkish | Firefox | 12/20/2011 | 5411 | |
| css.properties.hyphens.language_turkmen | Edge | 11/19/2020 | 2154 | |
| css.properties.hyphens.language_upper_sorbian | Firefox | 11/8/2011 | 5453 | |
| css.properties.image-rendering.optimizeQuality | Firefox | 1/21/2010 | 6109 | |
| css.properties.image-rendering.optimizeSpeed | Firefox | 1/21/2010 | 6109 | |
| css.properties.image-rendering.smooth 📋 | Firefox | 10/5/2021 | 1834 | |
| css.properties.ime-mode 📋 | Firefox | 6/17/2008 | 6692 | |
| css.properties.initial-letter 📋 | Edge | 2/9/2023 | 1342 | Safari: See bug 229090 for the unprefixed property.Safari on iOS: See bug 229090 for the unprefixed property.WebView on iOS: See bug 229090 for the unprefixed property. |
| css.properties.initial-letter.normal 📋 | Edge | 2/9/2023 | 1342 | |
| css.properties.inline-size.anchor-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.inline-size.fit-content_function | Firefox | 8/10/2021 | 1890 | |
| css.properties.inset.anchor 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.inset.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.inset-block.anchor 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.inset-block.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.inset-block-end.anchor 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.inset-block-end.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.inset-block-start.anchor 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.inset-block-start.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.inset-inline.anchor 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.inset-inline.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.inset-inline-end.anchor 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.inset-inline-end.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.inset-inline-start.anchor 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.inset-inline-start.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.interpolate-size 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.interpolate-size.allow-keywords 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.interpolate-size.numeric-only 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.justify-items.anchor-center 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.justify-self.anchor-center 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.left.anchor 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.left.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.line-clamp.none | Firefox | 7/9/2019 | 2653 | |
| css.properties.line-height-step 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.list-style.symbols 📋 | Firefox | 1/13/2015 | 4291 | |
| css.properties.list-style-type.afar | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.amharic | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.amharic-abegede | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.asterisks | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.binary | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic-abegede | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic-abegede-am-et | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic-abegede-gez | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic-abegede-ti-er | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic-abegede-ti-et | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic-halehame-aa-er | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic-halehame-aa-et | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic-halehame-am-et | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic-halehame-gez | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic-halehame-om-et | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic-halehame-sid-et | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic-halehame-so-et | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.ethiopic-halehame-tig | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.footnotes | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.lower-hexadecimal | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.lower-norwegian | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.octal | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.oromo | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.sidama | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.somali | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.symbols 📋 | Firefox | 1/13/2015 | 4291 | |
| css.properties.list-style-type.tigre | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.tigrinya-er | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.tigrinya-er-abegede | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.tigrinya-et | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.tigrinya-et-abegede | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.upper-greek | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.upper-hexadecimal | Edge | 5/27/2021 | 1965 | |
| css.properties.list-style-type.upper-norwegian | Edge | 5/27/2021 | 1965 | |
| css.properties.margin.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.margin-block.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.margin-block-end.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.margin-block-start.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.margin-bottom.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.margin-inline.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.margin-inline-end.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.margin-inline-start.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.margin-left.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.margin-right.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.margin-top.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.mask-border 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.mask-border-outset 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.mask-border-repeat 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.mask-border-slice 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.mask-border-source 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.mask-border-width 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.mask-clip.border | Edge | 1/15/2020 | 2463 | |
| css.properties.mask-clip.content | Edge | 1/15/2020 | 2463 | |
| css.properties.mask-clip.padding | Edge | 1/15/2020 | 2463 | |
| css.properties.mask-clip.text | Edge | 1/15/2020 | 2463 | |
| css.properties.mask-origin.border | Edge | 1/15/2020 | 2463 | |
| css.properties.mask-origin.content | Edge | 1/15/2020 | 2463 | |
| css.properties.mask-origin.padding | Edge | 1/15/2020 | 2463 | |
| css.properties.math-shift 📋 | Edge | 1/12/2023 | 1370 | |
| css.properties.max-block-size.anchor-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.max-block-size.fit-content_function | Firefox | 8/10/2021 | 1890 | |
| css.properties.max-height.anchor-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.max-height.fit-content_function 📋 | Firefox | 8/10/2021 | 1890 | |
| css.properties.max-height.stretch 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.max-inline-size.anchor-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.max-inline-size.fit-content_function | Firefox | 8/10/2021 | 1890 | |
| css.properties.max-width.anchor-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.max-width.fit-content_function 📋 | Firefox | 8/10/2021 | 1890 | |
| css.properties.max-width.stretch 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.min-block-size.anchor-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.min-block-size.fit-content_function | Firefox | 8/10/2021 | 1890 | |
| css.properties.min-height.anchor-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.min-height.fit-content_function 📋 | Firefox | 8/10/2021 | 1890 | |
| css.properties.min-height.stretch | Edge | 1/15/2020 | 2463 | |
| css.properties.min-inline-size.anchor-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.min-inline-size.fit-content_function | Firefox | 8/10/2021 | 1890 | |
| css.properties.min-width.anchor-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.min-width.fit-content_function 📋 | Firefox | 8/10/2021 | 1890 | |
| css.properties.min-width.stretch | Edge | 1/15/2020 | 2463 | |
| css.properties.object-view-box 📋 | Edge | 8/5/2022 | 1530 | |
| css.properties.object-view-box.none 📋 | Edge | 8/5/2022 | 1530 | |
| css.properties.orphans 📋 | Edge | 7/29/2015 | 4094 | |
| css.properties.overflow-block 📋 | Firefox | 9/3/2019 | 2597 | |
| css.properties.overflow-block.overlay | Firefox | 4/11/2023 | 1281 | |
| css.properties.overflow-clip-margin.border-box 📋 | Edge | 8/5/2022 | 1530 | |
| css.properties.overflow-clip-margin.content-box 📋 | Edge | 8/5/2022 | 1530 | |
| css.properties.overflow-clip-margin.padding-box 📋 | Edge | 8/5/2022 | 1530 | |
| css.properties.overflow-inline 📋 | Firefox | 9/3/2019 | 2597 | |
| css.properties.overflow-inline.overlay | Firefox | 4/11/2023 | 1281 | |
| css.properties.overlay 📋 | Edge | 9/15/2023 | 1124 | |
| css.properties.overlay.auto 📋 | Edge | 9/15/2023 | 1124 | |
| css.properties.overlay.none 📋 | Edge | 9/15/2023 | 1124 | |
| css.properties.page-break-after.avoid 📋 | Edge | 7/29/2015 | 4094 | |
| css.properties.page-break-before.avoid 📋 | Edge | 7/29/2015 | 4094 | |
| css.properties.place-items.anchor-center 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.place-self.anchor-center 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.position-anchor 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.position-anchor.auto 📋 | Edge | 5/17/2024 | 879 | Chrome: The generic auto value exists, but it does not yet have the effect described in the spec.Chrome Android: The generic auto value exists, but it does not yet have the effect described in the spec.Edge: The generic auto value exists, but it does not yet have the effect described in the spec.Opera: The generic auto value exists, but it does not yet have the effect described in the spec.Opera Android: The generic auto value exists, but it does not yet have the effect described in the spec.Samsung Internet: The generic auto value exists, but it does not yet have the effect described in the spec.WebView Android: The generic auto value exists, but it does not yet have the effect described in the spec. |
| css.properties.position-area 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.block-end 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.block-start 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.bottom 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.center 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.end 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.inline-end 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.inline-start 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.left 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.none 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.right 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.self-end 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.self-start 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.span-all 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.span-block-end 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.span-block-start 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.span-bottom 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.span-end 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.span-inline-end 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.span-inline-start 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.span-start 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.span-top 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.span-x-end 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.span-x-start 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.span-y-end 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.span-y-start 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.start 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.top 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.x-end 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.x-self-end 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.x-self-start 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.x-start 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.y-end 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.y-self-end 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.y-self-start 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-area.y-start 📋 | Edge | 9/19/2024 | 754 | |
| css.properties.position-try 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.position-try-fallbacks 📋 | Edge | 8/22/2024 | 782 | |
| css.properties.position-try-fallbacks.flip-block 📋 | Edge | 8/22/2024 | 782 | |
| css.properties.position-try-fallbacks.flip-inline 📋 | Edge | 8/22/2024 | 782 | |
| css.properties.position-try-fallbacks.flip-start 📋 | Edge | 8/22/2024 | 782 | |
| css.properties.position-try-fallbacks.none 📋 | Edge | 8/22/2024 | 782 | |
| css.properties.position-try-fallbacks.position-area 📋 | Edge | 8/22/2024 | 782 | Chrome: inset-area values had to be wrapped inside an inset-area() function.Chrome Android: inset-area values had to be wrapped inside an inset-area() function.Edge: inset-area values had to be wrapped inside an inset-area() function.Opera: inset-area values had to be wrapped inside an inset-area() function.Opera Android: inset-area values had to be wrapped inside an inset-area() function.Samsung Internet: inset-area values had to be wrapped inside an inset-area() function.WebView Android: inset-area values had to be wrapped inside an inset-area() function. |
| css.properties.position-try-order 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.position-try-order.most-block-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.position-try-order.most-height 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.position-try-order.most-inline-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.position-try-order.most-width 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.position-try-order.normal 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.position-visibility 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.position-visibility.always 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.position-visibility.anchors-visible 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.position-visibility.no-overflow 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.print-color-adjust.economy 📋 | Firefox | 2/8/2022 | 1708 | |
| css.properties.print-color-adjust.exact 📋 | Firefox | 2/8/2022 | 1708 | |
| css.properties.reading-flow 📋 | Edge | 8/22/2024 | 782 | |
| css.properties.right.anchor 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.right.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.ruby-position.alternate | Firefox | 4/19/2021 | 2003 | |
| css.properties.ruby-position.inter-character | Edge | 7/16/2020 | 2280 | 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 📋 | Edge | 2/6/2025 | 614 | |
| css.properties.scroll-initial-target.nearest 📋 | Edge | 2/6/2025 | 614 | |
| css.properties.scroll-initial-target.none 📋 | Edge | 2/6/2025 | 614 | |
| css.properties.scroll-timeline-axis.block 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.scroll-timeline-axis.inline 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.scroll-timeline-axis.x 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.scroll-timeline-axis.y 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.speak 📋 | Edge | 2/7/2020 | 2440 | 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-box 📋 | Edge | 2/6/2025 | 614 | |
| css.properties.text-box.normal 📋 | Edge | 2/6/2025 | 614 | |
| css.properties.text-box-edge 📋 | Edge | 2/6/2025 | 614 | |
| css.properties.text-box-edge.auto 📋 | Edge | 2/6/2025 | 614 | |
| css.properties.text-box-trim 📋 | Edge | 2/6/2025 | 614 | |
| css.properties.text-box-trim.none 📋 | Edge | 2/6/2025 | 614 | |
| css.properties.text-box-trim.trim-both 📋 | Edge | 2/6/2025 | 614 | |
| css.properties.text-box-trim.trim-end 📋 | Edge | 2/6/2025 | 614 | |
| css.properties.text-box-trim.trim-start 📋 | Edge | 2/6/2025 | 614 | |
| css.properties.text-decoration-line.grammar-error 📋 | Edge | 1/25/2024 | 992 | |
| css.properties.text-decoration-line.spelling-error 📋 | Edge | 1/25/2024 | 992 | |
| css.properties.text-decoration-skip-ink.all 📋 | Firefox | 4/7/2020 | 2380 | |
| css.properties.text-emphasis-position.auto | Firefox | 10/29/2024 | 714 | |
| css.properties.text-indent.each-line 📋 | Firefox | 12/19/2023 | 1029 | |
| css.properties.text-indent.hanging 📋 | Firefox | 12/19/2023 | 1029 | |
| css.properties.text-justify.auto 📋 | Firefox | 8/8/2017 | 3353 | |
| css.properties.text-justify.inter-character 📋 | Firefox | 8/8/2017 | 3353 | |
| css.properties.text-justify.inter-word 📋 | Firefox | 8/8/2017 | 3353 | |
| css.properties.text-justify.none 📋 | Firefox | 8/8/2017 | 3353 | |
| css.properties.text-overflow.string | Firefox | 12/20/2011 | 5411 | |
| css.properties.text-overflow.two_value_syntax | Firefox | 12/20/2011 | 5411 | |
| css.properties.text-size-adjust 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.text-size-adjust.auto 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.text-size-adjust.none 📋 | Edge | 1/15/2020 | 2463 | |
| css.properties.text-size-adjust.percentages 📋 | Edge | 7/29/2015 | 4094 | |
| css.properties.text-spacing-trim 📋 | Edge | 3/22/2024 | 935 | |
| css.properties.text-spacing-trim.normal 📋 | Edge | 3/22/2024 | 935 | |
| css.properties.text-spacing-trim.space-all 📋 | Edge | 3/22/2024 | 935 | |
| css.properties.text-spacing-trim.space-first 📋 | Edge | 3/22/2024 | 935 | |
| css.properties.text-spacing-trim.trim-start 📋 | Edge | 3/22/2024 | 935 | |
| css.properties.text-transform.dutch_ij_digraph | Firefox | 7/17/2012 | 5201 | |
| css.properties.text-transform.full-size-kana 📋 | Firefox | 12/11/2018 | 2863 | |
| css.properties.text-transform.full-width 📋 | Firefox | 2/19/2013 | 4984 | |
| css.properties.text-wrap.pretty 📋 | Edge | 9/15/2023 | 1124 | |
| css.properties.text-wrap-style.pretty 📋 | Edge | 10/17/2024 | 726 | |
| css.properties.timeline-scope 📋 | Edge | 8/21/2023 | 1149 | |
| css.properties.timeline-scope.all 📋 | Edge | 8/21/2023 | 1149 | |
| css.properties.timeline-scope.none 📋 | Edge | 8/21/2023 | 1149 | |
| css.properties.top.anchor 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.top.anchor-size 📋 | Edge | 1/17/2025 | 634 | |
| css.properties.touch-action.pan-down | Edge | 1/15/2020 | 2463 | |
| css.properties.touch-action.pan-left | Edge | 1/15/2020 | 2463 | |
| css.properties.touch-action.pan-right | Edge | 1/15/2020 | 2463 | |
| css.properties.touch-action.pan-up | Edge | 1/15/2020 | 2463 | |
| css.properties.user-modify | Edge | 7/29/2015 | 4094 | 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 | Edge | 7/29/2015 | 4094 | |
| css.properties.view-timeline-axis.block 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.view-timeline-axis.inline 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.view-timeline-axis.x 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.view-timeline-axis.y 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.view-timeline-inset 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.view-timeline-inset.auto 📋 | Edge | 7/21/2023 | 1180 | |
| css.properties.view-transition-class 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.view-transition-class.none 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.view-transition-name 📋 | Edge | 3/13/2023 | 1310 | |
| css.properties.view-transition-name.none 📋 | Edge | 3/13/2023 | 1310 | |
| css.properties.white-space.shorthand_values | Edge | 6/2/2023 | 1229 | Chrome: Only accepts values for white-space-collapse and text-wrap-mode, not white-space-trim.Chrome Android: Only accepts values for white-space-collapse and text-wrap-mode, not white-space-trim.Edge: Only accepts values for white-space-collapse and text-wrap-mode, not white-space-trim.Opera: Only accepts values for white-space-collapse and text-wrap-mode, not white-space-trim.Opera Android: Only accepts values for white-space-collapse and text-wrap-mode, not white-space-trim.Samsung Internet: Only accepts values for white-space-collapse and text-wrap-mode, not white-space-trim.WebView Android: Only accepts values for white-space-collapse and text-wrap-mode, not white-space-trim. |
| css.properties.white-space.svg_elements | Firefox | 2/24/2015 | 4249 | |
| css.properties.white-space-collapse.preserve-spaces 📋 | Firefox | 3/19/2024 | 938 | |
| css.properties.widows 📋 | Edge | 7/29/2015 | 4094 | |
| css.properties.width.anchor-size 📋 | Edge | 5/17/2024 | 879 | |
| css.properties.width.fit-content_function 📋 | Firefox | 8/10/2021 | 1890 | |
| css.properties.word-break.auto-phrase 📋 | Edge | 11/2/2023 | 1076 | 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.properties.word-spacing.percentages | Firefox | 3/8/2016 | 3871 | |
| css.selectors.-moz-color-swatch | Firefox | 2/4/2014 | 4634 | |
| css.selectors.-moz-first-node | Firefox | 1/7/2020 | 2471 | |
| css.selectors.-moz-focus-inner | Firefox | 1/7/2020 | 2471 | |
| css.selectors.-moz-last-node | Firefox | 1/7/2020 | 2471 | |
| css.selectors.-moz-list-bullet | Firefox | 1/7/2020 | 2471 | |
| css.selectors.-moz-list-number | Firefox | 1/7/2020 | 2471 | |
| css.selectors.-moz-only-whitespace | Firefox | 11/9/2004 | 8008 | |
| css.selectors.-moz-progress-bar | Firefox | 1/7/2020 | 2471 | |
| css.selectors.-moz-range-progress | Firefox | 6/25/2013 | 4858 | |
| css.selectors.-moz-range-thumb | Firefox | 5/14/2013 | 4900 | |
| css.selectors.-moz-range-track | Firefox | 5/14/2013 | 4900 | |
| css.selectors.-moz-submit-invalid | Firefox | 4/19/2021 | 2003 | 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 | Firefox | 3/22/2011 | 5684 | |
| css.selectors.-webkit-inner-spin-button | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-meter-bar | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-meter-even-less-good-value | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-meter-inner-element | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-meter-optimum-value | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-meter-suboptimum-value | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-progress-bar | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-progress-inner-element | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-progress-value | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-resizer | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-scrollbar | Edge | 1/15/2020 | 2463 | 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 | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-scrollbar-corner | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-scrollbar-thumb | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-scrollbar-track | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-scrollbar-track-piece | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-search-cancel-button | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-search-results-button | Edge | 1/15/2020 | 2463 | |
| css.selectors.-webkit-slider-runnable-track | Edge | 5/21/2020 | 2336 | |
| css.selectors.-webkit-slider-thumb | Edge | 5/21/2020 | 2336 | |
| css.selectors.active-view-transition 📋 | Edge | 5/17/2024 | 879 | |
| css.selectors.active-view-transition-type 📋 | Edge | 5/17/2024 | 879 | |
| css.selectors.attribute.case_sensitive_modifier | Firefox | 3/19/2019 | 2765 | |
| css.selectors.cue.selector_argument | Edge | 1/15/2020 | 2463 | |
| css.selectors.details-content 📋 | Edge | 11/14/2024 | 698 | |
| css.selectors.first-letter.dutch_ij_digraph | Firefox | 3/23/2021 | 2030 | |
| css.selectors.first-letter.svg_text_element | Firefox | 3/19/2024 | 938 | |
| css.selectors.first-line.svg_text_element | Firefox | 3/19/2024 | 938 | |
| css.selectors.fullscreen.all_elements | Firefox | 12/15/2015 | 3955 | |
| css.selectors.future 📋 | Edge | 1/15/2020 | 2463 | |
| css.selectors.grammar-error 📋 | Edge | 1/25/2024 | 992 | |
| css.selectors.highlight 📋 | Edge | 9/1/2022 | 1503 | Firefox: Cannot yet be used with text-decoration and text-shadow.Safari: The style is ignored when combined with user-select: none. See bug 278455.Safari on iOS: The style is ignored when combined with user-select: none. See bug 278455.WebView on iOS: The style is ignored when combined with user-select: none. See bug 278455. |
| css.selectors.host-context 📋 | Edge | 1/15/2020 | 2463 | |
| css.selectors.lang.argument_list | Firefox | 6/6/2023 | 1225 | |
| css.selectors.lang.wildcards | Firefox | 6/6/2023 | 1225 | |
| css.selectors.left 📋 | Edge | 7/29/2015 | 4094 | |
| css.selectors.open 📋 | Edge | 2/6/2025 | 614 | Chrome: The selector is recognized, but has no effect.Chrome Android: The selector is recognized, but has no effect.Edge: The selector is recognized, but has no effect.Opera: The selector is recognized, but has no effect.Opera Android: The selector is recognized, but has no effect.Samsung Internet: The selector is recognized, but has no effect.WebView Android: The selector is recognized, but has no effect. |
| css.selectors.past 📋 | Edge | 1/15/2020 | 2463 | |
| css.selectors.picture-in-picture 📋 | Edge | 2/9/2023 | 1342 | |
| css.selectors.right 📋 | Edge | 7/29/2015 | 4094 | |
| css.selectors.selection.text-decoration | Edge | 9/1/2022 | 1503 | |
| css.selectors.spelling-error 📋 | Edge | 1/25/2024 | 992 | |
| css.selectors.view-transition 📋 | Edge | 1/12/2023 | 1370 | |
| css.selectors.view-transition-group 📋 | Edge | 1/12/2023 | 1370 | |
| css.selectors.view-transition-image-pair 📋 | Edge | 1/12/2023 | 1370 | |
| css.selectors.view-transition-new 📋 | Edge | 1/12/2023 | 1370 | |
| css.selectors.view-transition-old 📋 | Edge | 1/12/2023 | 1370 | |
| css.selectors.xr-overlay 📋 | Edge | 5/21/2020 | 2336 | |
| css.types.abs 📋 | Firefox | 9/26/2023 | 1113 | |
| css.types.anchor 📋 | Edge | 5/17/2024 | 879 | |
| css.types.anchor-size 📋 | Edge | 5/17/2024 | 879 | |
| css.types.anchor-size.inset_margin | Edge | 1/17/2025 | 634 | |
| css.types.attr.type-or-unit | Edge | 2/6/2025 | 614 | |
| css.types.calc-size 📋 | Edge | 9/19/2024 | 754 | |
| css.types.color.system-color.mark_marktext_buttonborder 📋 | Firefox | 1/17/2023 | 1365 | |
| css.types.image.cross-fade 📋 | Edge | 1/15/2020 | 2463 | 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 📋 | Firefox | 11/14/2017 | 3255 | 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 📋 | Edge | 1/15/2020 | 2463 | |
| css.types.length.rcap 📋 | Edge | 10/13/2023 | 1096 | |
| css.types.length.rch 📋 | Edge | 3/13/2023 | 1310 | |
| css.types.length.rex 📋 | Edge | 3/13/2023 | 1310 | |
| css.types.length.ric 📋 | Edge | 3/13/2023 | 1310 | |
| css.types.ratio.number_value | Firefox | 6/30/2020 | 2296 | |
| css.types.sign 📋 | Firefox | 9/26/2023 | 1113 | |
| css.types.text-edge 📋 | Edge | 2/6/2025 | 614 | |
| css.types.text-edge.alphabetic 📋 | Edge | 2/6/2025 | 614 | |
| css.types.text-edge.cap 📋 | Edge | 2/6/2025 | 614 | |
| css.types.text-edge.ex 📋 | Edge | 2/6/2025 | 614 | |
| css.types.text-edge.text 📋 | Edge | 2/6/2025 | 614 |
| API | First Browser | Date | Days in Limbo | Notes |
|---|---|---|---|---|
| javascript.builtins.Atomics.Atomic_operations_on_non_shared_buffers | Firefox | 7/28/2020 | 2268 | |
| javascript.builtins.Atomics.pause 📋 | Edge | 2/6/2025 | 614 | |
| javascript.builtins.Atomics.waitAsync 📋 | Edge | 11/19/2020 | 2154 | |
| javascript.builtins.DataView.getFloat16 📋 | Firefox | 8/6/2024 | 798 | |
| javascript.builtins.DataView.setFloat16 📋 | Firefox | 8/6/2024 | 798 | |
| javascript.builtins.Error.Error.fileName_parameter | Firefox | 11/9/2004 | 8008 | |
| javascript.builtins.Error.Error.lineNumber_parameter | Firefox | 11/9/2004 | 8008 | |
| javascript.builtins.Error.columnNumber | Firefox | 11/9/2004 | 8008 | |
| javascript.builtins.Error.fileName | Firefox | 11/9/2004 | 8008 | |
| javascript.builtins.Error.lineNumber | Firefox | 11/9/2004 | 8008 | |
| javascript.builtins.FinalizationRegistry.symbol_as_target | Edge | 1/12/2023 | 1370 | |
| javascript.builtins.Float16Array 📋 | Firefox | 8/6/2024 | 798 | |
| javascript.builtins.Float16Array.Float16Array 📋 | Firefox | 8/6/2024 | 798 | |
| javascript.builtins.Function.displayName | Firefox | 6/5/2012 | 5243 | |
| javascript.builtins.InternalError | Firefox | 11/9/2004 | 8008 | |
| javascript.builtins.InternalError.InternalError | Firefox | 11/9/2004 | 8008 | |
| javascript.builtins.Intl.DurationFormat 📋 | Edge | 9/19/2024 | 754 | |
| javascript.builtins.Intl.DurationFormat.DurationFormat 📋 | Edge | 9/19/2024 | 754 | |
| javascript.builtins.Intl.DurationFormat.format 📋 | Edge | 9/19/2024 | 754 | |
| javascript.builtins.Intl.DurationFormat.formatToParts 📋 | Edge | 9/19/2024 | 754 | |
| javascript.builtins.Intl.DurationFormat.resolvedOptions 📋 | Edge | 9/19/2024 | 754 | |
| javascript.builtins.Intl.DurationFormat.supportedLocalesOf 📋 | Edge | 9/19/2024 | 754 | |
| javascript.builtins.Intl.Locale.getCalendars 📋 | Edge | 10/17/2024 | 726 | Chrome: Implemented as an accessor property.Chrome Android: Implemented as an accessor property.Edge: Implemented as an accessor property.Node.js: Implemented as an accessor property.Quest Browser: Implemented as an accessor property.Opera: Implemented as an accessor property.Opera Android: Implemented as an accessor property.Safari: Implemented as an accessor property.Safari on iOS: Implemented as an accessor property.Samsung Internet: Implemented as an accessor property.WebView Android: Implemented as an accessor property.WebView on iOS: Implemented as an accessor property. |
| javascript.builtins.Intl.Locale.getCollations 📋 | Edge | 10/17/2024 | 726 | Chrome: Implemented as an accessor property.Chrome Android: Implemented as an accessor property.Edge: Implemented as an accessor property.Node.js: Implemented as an accessor property.Quest Browser: Implemented as an accessor property.Opera: Implemented as an accessor property.Opera Android: Implemented as an accessor property.Safari: Implemented as an accessor property.Safari on iOS: Implemented as an accessor property.Samsung Internet: Implemented as an accessor property.WebView Android: Implemented as an accessor property.WebView on iOS: Implemented as an accessor property. |
| javascript.builtins.Intl.Locale.getHourCycles 📋 | Edge | 10/17/2024 | 726 | Chrome: Implemented as an accessor property.Chrome Android: Implemented as an accessor property.Edge: Implemented as an accessor property.Node.js: Implemented as an accessor property.Quest Browser: Implemented as an accessor property.Opera: Implemented as an accessor property.Opera Android: Implemented as an accessor property.Safari: Implemented as an accessor property.Safari on iOS: Implemented as an accessor property.Samsung Internet: Implemented as an accessor property.WebView Android: Implemented as an accessor property.WebView on iOS: Implemented as an accessor property. |
| javascript.builtins.Intl.Locale.getNumberingSystems 📋 | Edge | 10/17/2024 | 726 | Chrome: Implemented as an accessor property.Chrome Android: Implemented as an accessor property.Edge: Implemented as an accessor property.Node.js: Implemented as an accessor property.Quest Browser: Implemented as an accessor property.Opera: Implemented as an accessor property.Opera Android: Implemented as an accessor property.Safari: Implemented as an accessor property.Safari on iOS: Implemented as an accessor property.Samsung Internet: Implemented as an accessor property.WebView Android: Implemented as an accessor property.WebView on iOS: Implemented as an accessor property. |
| javascript.builtins.Intl.Locale.getTextInfo 📋 | Edge | 10/17/2024 | 726 | Chrome: Implemented as an accessor property.Chrome Android: Implemented as an accessor property.Deno: Implemented as an accessor property.Edge: Implemented as an accessor property.Node.js: Implemented as an accessor property.Quest Browser: Implemented as an accessor property.Opera: Implemented as an accessor property.Opera Android: Implemented as an accessor property.Safari: Implemented as an accessor property.Safari on iOS: Implemented as an accessor property.Samsung Internet: Implemented as an accessor property.WebView Android: Implemented as an accessor property.WebView on iOS: Implemented as an accessor property. |
| javascript.builtins.Intl.Locale.getTimeZones 📋 | Edge | 10/17/2024 | 726 | Chrome: Implemented as an accessor property.Chrome Android: Implemented as an accessor property.Edge: Implemented as an accessor property.Node.js: Implemented as an accessor property.Quest Browser: Implemented as an accessor property.Opera: Implemented as an accessor property.Opera Android: Implemented as an accessor property.Safari: Implemented as an accessor property.Safari on iOS: Implemented as an accessor property.Samsung Internet: Implemented as an accessor property.WebView Android: Implemented as an accessor property.WebView on iOS: Implemented as an accessor property. |
| javascript.builtins.Intl.Locale.getWeekInfo 📋 | Edge | 10/17/2024 | 726 | Chrome: Implemented as an accessor property.Chrome Android: Implemented as an accessor property.Edge: Implemented as an accessor property.Node.js: Implemented as an accessor property.Quest Browser: Implemented as an accessor property.Opera: Implemented as an accessor property.Opera Android: Implemented as an accessor property.Safari: Implemented as an accessor property.Safari on iOS: Implemented as an accessor property.Samsung Internet: Implemented as an accessor property.WebView Android: Implemented as an accessor property.WebView on iOS: Implemented as an accessor property. |
| javascript.builtins.Intl.PluralRules.PluralRules.options_parameter.options_roundingIncrement_parameter | Firefox | 8/1/2023 | 1169 | |
| javascript.builtins.Intl.PluralRules.PluralRules.options_parameter.options_trailingZeroDisplay_parameter | Firefox | 8/1/2023 | 1169 | |
| javascript.builtins.Math.f16round 📋 | Firefox | 8/6/2024 | 798 | |
| javascript.builtins.Promise.incumbent_settings_object_tracking 📋 | Firefox | 11/15/2016 | 3619 | |
| javascript.builtins.RegExp.escape 📋 | Firefox | 1/7/2025 | 644 | |
| javascript.builtins.Uint8Array.fromBase64 📋 | Firefox | 11/26/2024 | 686 | |
| javascript.builtins.Uint8Array.fromHex 📋 | Firefox | 11/26/2024 | 686 | |
| javascript.builtins.Uint8Array.setFromBase64 📋 | Firefox | 11/26/2024 | 686 | |
| javascript.builtins.Uint8Array.setFromHex 📋 | Firefox | 11/26/2024 | 686 | |
| javascript.builtins.Uint8Array.toBase64 📋 | Firefox | 11/26/2024 | 686 | |
| javascript.builtins.Uint8Array.toHex 📋 | Firefox | 11/26/2024 | 686 | |
| javascript.builtins.WeakMap.symbol_as_keys | Edge | 1/12/2023 | 1370 | |
| javascript.builtins.WeakRef.symbol_as_target | Edge | 1/12/2023 | 1370 | |
| javascript.builtins.WeakSet.symbol_as_keys | Edge | 1/12/2023 | 1370 | |
| javascript.grammar.trailing_commas.trailing_commas_in_dynamic_import | Edge | 5/27/2021 | 1965 | Node.js: The second parameter no longer throws a parser error, but the --experimental-json-modules flag is still needed to load JSON modules. |
| javascript.operators.import.options_parameter | Edge | 5/27/2021 | 1965 | Node.js: The second parameter no longer throws a parser error, but the --experimental-json-modules flag is still needed to load JSON modules. |
| javascript.statements.import.import_attributes 📋 | Edge | 3/22/2024 | 935 | |
| javascript.statements.import.import_attributes.type_css | Edge | 3/22/2024 | 935 | |
| javascript.statements.import.import_attributes.type_json | Edge | 3/22/2024 | 935 | |
| javascript.statements.import.service_worker_support | Edge | 5/27/2021 | 1965 | |
| javascript.statements.import.worklet_support | Firefox | 6/6/2023 | 1225 |