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 Safari
In Edge 343
In Safari 91

Unstable APIs

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

Raw Data

Quick Links:

CSS Data

API First Browser Date Days in Limbo Notes
css.at-rules.counter-style.speak-as 📋Edge5/27/20211893
css.at-rules.font-face.OpenType_CBDT_CBLC Edge1/15/20202391
css.at-rules.font-face.OpenType_COLRv1 Edge2/3/20221641
css.at-rules.font-face.OpenType_SVG Safari3/25/20192687
css.at-rules.font-face.SVG_fonts Safari3/18/20086711
css.at-rules.font-face.ascent-override 📋Edge11/19/20202082
css.at-rules.font-face.descent-override 📋Edge11/19/20202082
css.at-rules.font-face.font-feature-settings 📋Safari9/20/20163603
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.line-gap-override 📋Edge11/19/20202082
css.at-rules.font-face.src.drop_invalid_item Edge12/5/20221336
Chrome: Chrome drops invalid item for tech() but not other invalid valuesChrome Android: Chrome Android drops invalid item for tech() but not other invalid valuesEdge: Edge drops invalid item for tech() but not other invalid valuesOpera: Opera drops invalid item for tech() but not other invalid valuesOpera Android: Opera Android drops invalid item for tech() but not other invalid valuesSamsung Internet: Samsung Internet drops invalid item for tech() but not other invalid valuesWebView Android: WebView Android drops invalid item for tech() but not other invalid values
css.at-rules.import.supports 📋Edge2/23/2024891
css.at-rules.keyframes.named_range_keyframes 📋Edge7/21/20231108
css.at-rules.media.-webkit-animation Safari6/8/20096264
css.at-rules.media.-webkit-transform-2d Safari6/8/20096264
css.at-rules.media.-webkit-transition Safari6/8/20096264
css.at-rules.media.display-mode.picture-in-picture 📋Edge3/22/2024863
css.at-rules.media.inverted-colors 📋Safari3/21/20163786
css.at-rules.media.media_query_values Edge1/15/20202391
css.at-rules.media.prefers-color-scheme.respects-inherited-scheme Edge9/19/2024682
Chrome: Only supports SVG images, not iframes.Chrome Android: Only supports SVG images, not iframes.Edge: Only supports SVG images, not iframes.Opera: Only supports SVG images, not iframes.Opera Android: Only supports SVG images, not iframes.Samsung Internet: Only supports SVG images, not iframes.WebView Android: Only supports SVG images, not iframes.
css.at-rules.media.prefers-reduced-data 📋Edge8/27/20202166
css.at-rules.media.prefers-reduced-transparency 📋Edge10/13/20231024
css.at-rules.media.video-dynamic-range 📋Edge2/3/20221641
css.at-rules.page.bottom-center 📋Edge11/14/2024626
css.at-rules.page.bottom-left 📋Edge11/14/2024626
css.at-rules.page.bottom-left-corner 📋Edge11/14/2024626
css.at-rules.page.bottom-right 📋Edge11/14/2024626
css.at-rules.page.bottom-right-corner 📋Edge11/14/2024626
css.at-rules.page.left-bottom 📋Edge11/14/2024626
css.at-rules.page.left-middle 📋Edge11/14/2024626
css.at-rules.page.left-top 📋Edge11/14/2024626
css.at-rules.page.page-orientation 📋Edge8/27/20202166
css.at-rules.page.right-bottom 📋Edge11/14/2024626
css.at-rules.page.right-middle 📋Edge11/14/2024626
css.at-rules.page.right-top 📋Edge11/14/2024626
css.at-rules.page.top-center 📋Edge11/14/2024626
css.at-rules.page.top-left 📋Edge11/14/2024626
css.at-rules.page.top-left-corner 📋Edge11/14/2024626
css.at-rules.page.top-right 📋Edge11/14/2024626
css.at-rules.page.top-right-corner 📋Edge11/14/2024626
css.at-rules.position-try 📋Edge5/17/2024807
css.properties.-webkit-app-region Edge1/15/20202391
css.properties.-webkit-column-axis Safari7/25/20125121
css.properties.-webkit-column-progression Safari10/22/20134667
css.properties.-webkit-cursor-visibility Safari10/22/20134667
css.properties.-webkit-hyphenate-limit-after Safari7/20/20115492
css.properties.-webkit-hyphenate-limit-before Safari7/20/20115492
css.properties.-webkit-hyphenate-limit-lines Safari7/25/20125121
css.properties.-webkit-line-align Safari7/25/20125121
css.properties.-webkit-line-box-contain Safari7/20/20115492
css.properties.-webkit-line-grid Safari7/25/20125121
css.properties.-webkit-line-snap Safari7/25/20125121
css.properties.-webkit-mask-source-type Safari10/22/20134667
css.properties.-webkit-nbsp-mode Safari6/8/20096264
css.properties.-webkit-tap-highlight-color Edge7/29/20154022
css.properties.-webkit-text-decorations-in-effect Edge1/15/20202391
css.properties.-webkit-text-zoom Safari9/20/20163603
css.properties.align-content.flex_context.last_baseline Safari9/19/20173239
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-items.anchor-center 📋Edge5/17/2024807
css.properties.align-self.anchor-center 📋Edge5/17/2024807
css.properties.align-self.position_absolute_context 📋Edge2/23/2024891
css.properties.anchor-name 📋Edge5/17/2024807
css.properties.anchor-name.none 📋Edge5/17/2024807
css.properties.anchor-scope 📋Edge11/14/2024626
css.properties.anchor-scope.all 📋Edge11/14/2024626
css.properties.anchor-scope.none 📋Edge11/14/2024626
css.properties.animation.animation-timeline_included Edge7/21/20231108
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 📋Edge7/21/20231108
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 📋Edge7/21/20231108
css.properties.animation-range-end 📋Edge7/21/20231108
css.properties.animation-range-end.normal 📋Edge7/21/20231108
css.properties.animation-range-start 📋Edge7/21/20231108
css.properties.animation-range-start.normal 📋Edge7/21/20231108
css.properties.animation-timeline 📋Edge7/21/20231108
css.properties.animation-timeline.scroll 📋Edge7/21/20231108
Firefox: Zero scroll range is treated as 100% but should be 0% (see bug 1780865).Firefox: Supports the deprecated horizontal and vertical axis values, and not the x and y values.
css.properties.animation-timeline.view 📋Edge7/21/20231108
css.properties.background-clip.border-area 📋Safari12/11/2024599
css.properties.background-position-x.side-relative_values Safari3/14/20221602
css.properties.background-position-y.side-relative_values Safari3/14/20221602
css.properties.baseline-source 📋Edge3/13/20231238
css.properties.baseline-source.auto 📋Edge3/13/20231238
css.properties.baseline-source.first 📋Edge3/13/20231238
css.properties.baseline-source.last 📋Edge3/13/20231238
css.properties.block-size.anchor-size 📋Edge5/17/2024807
css.properties.bottom.anchor 📋Edge5/17/2024807
css.properties.bottom.anchor-size 📋Edge1/17/2025562
css.properties.box-flex-group Safari10/26/20076855
css.properties.box-lines Safari10/26/20076855
css.properties.break-after.multicol_context 📋Edge7/29/20154022
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 Edge5/31/20221524
css.properties.break-after.multicol_context.avoid-column Edge5/31/20221524
css.properties.break-after.multicol_context.column Edge7/29/20154022
css.properties.break-before.multicol_context 📋Edge7/29/20154022
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 Edge5/31/20221524
css.properties.break-before.multicol_context.avoid-column Edge5/31/20221524
css.properties.break-before.multicol_context.column Edge7/29/20154022
css.properties.break-inside.paged_context.avoid-page Edge7/29/20154022
css.properties.clip-path.is_animatable Edge1/15/20202391
css.properties.color-adjust 📋Safari3/14/20221602
css.properties.container-type.scroll-state 📋Edge2/6/2025542
css.properties.custom-property.env.titlebar-area-height 📋Edge9/2/20211795
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 📋Edge9/2/20211795
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 📋Edge9/2/20211795
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 📋Edge9/2/20211795
Chrome: Before version 93, Linux is unsupported.Chrome Android: Before version 93, Linux is unsupported.Edge: Before version 93, Linux is unsupported.
css.properties.d 📋Edge2/7/20202368
Safari: The property parses, but has no effect.Safari on iOS: The property parses, but has no effect.WebView on iOS: The property parses, but has no effect.
css.properties.display.contents.contents_unusual Edge1/15/20202391
css.properties.display.list-item.legend-support Edge1/15/20202391
css.properties.display.math Edge1/12/20231298
css.properties.display.none.option_is_hidden Edge1/15/20202391
css.properties.field-sizing 📋Edge3/22/2024863
css.properties.field-sizing.content 📋Edge3/22/2024863
css.properties.field-sizing.fixed 📋Edge3/22/2024863
css.properties.filter.svg_elements Edge3/4/20211977
css.properties.flex-grow.less_than_zero_animate Edge1/15/20202391
Firefox: Before Firefox 32, Firefox wasn't able to animate values starting or stopping at 0.Firefox for Android: Before Firefox for Android 32, Firefox for Android wasn't able to animate values starting or stopping at 0.
css.properties.font-family.math Edge1/12/20231298
css.properties.font-family.ui-monospace Safari3/24/20202322
css.properties.font-family.ui-rounded Safari3/24/20202322
css.properties.font-family.ui-sans-serif Safari3/24/20202322
css.properties.font-family.ui-serif Safari3/24/20202322
css.properties.font-palette.animation_computed Edge1/25/2024920
css.properties.font-palette.palette-mix_function 📋Edge1/25/2024920
css.properties.font-size.math Edge1/12/20231298
css.properties.font-variant-emoji.emoji 📋Edge11/14/2024626
css.properties.font-variant-emoji.normal 📋Edge11/14/2024626
css.properties.font-variant-emoji.text 📋Edge11/14/2024626
css.properties.font-variant-emoji.unicode 📋Edge11/14/2024626
css.properties.font-variant-position 📋Safari3/21/20163786
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 📋Safari3/24/20202322
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 📋Safari3/24/20202322
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 📋Safari3/24/20202322
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 📋Edge1/15/20202391
css.properties.forced-color-adjust.auto 📋Edge1/15/20202391
css.properties.forced-color-adjust.none 📋Edge1/15/20202391
css.properties.forced-color-adjust.preserve-parent-color 📋Edge10/3/20221399
css.properties.glyph-orientation-vertical 📋Safari3/24/20202322
css.properties.hanging-punctuation 📋Safari9/20/20163603
Safari: The characters U+0027 and U+0022 are not supported by the first and last keywords.Safari on iOS: The characters U+0027 and U+0022 are not supported by the first and last keywords.WebView on iOS: The characters U+0027 and U+0022 are not supported by the first and last keywords.
css.properties.hanging-punctuation.allow-end 📋Safari3/24/20202322
css.properties.hanging-punctuation.first 📋Safari3/24/20202322
css.properties.hanging-punctuation.last 📋Safari3/24/20202322
css.properties.hanging-punctuation.none 📋Safari3/24/20202322
css.properties.height.anchor-size 📋Edge5/17/2024807
css.properties.hyphenate-limit-chars 📋Edge1/12/20231298
css.properties.hyphenate-limit-chars.auto 📋Edge1/12/20231298
css.properties.hyphens.language_afrikaans Edge4/6/20231214
css.properties.hyphens.language_albanian Edge4/6/20231214
css.properties.hyphens.language_amharic Edge4/6/20231214
css.properties.hyphens.language_armenian Edge11/19/20202082
css.properties.hyphens.language_assamese Edge11/19/20202082
css.properties.hyphens.language_basque Edge11/19/20202082
css.properties.hyphens.language_belarusian Edge11/19/20202082
css.properties.hyphens.language_bengali Edge11/19/20202082
css.properties.hyphens.language_bulgarian Edge11/19/20202082
css.properties.hyphens.language_catalan Safari7/20/20115492
css.properties.hyphens.language_cyrillic_mongolian Edge11/19/20202082
css.properties.hyphens.language_estonian Edge11/19/20202082
css.properties.hyphens.language_ethiopic_script_mul Edge4/6/20231214
css.properties.hyphens.language_ethiopic_script_und Edge11/19/20202082
css.properties.hyphens.language_finnish Safari3/21/20163786
css.properties.hyphens.language_galician Edge4/6/20231214
css.properties.hyphens.language_georgian Edge4/6/20231214
css.properties.hyphens.language_german_swiss_orthography Edge11/19/20202082
css.properties.hyphens.language_german_traditional_orthography Edge11/19/20202082
css.properties.hyphens.language_gujarati Edge11/19/20202082
css.properties.hyphens.language_hindi Edge11/19/20202082
css.properties.hyphens.language_irish Edge11/19/20202082
css.properties.hyphens.language_kannada Edge11/19/20202082
css.properties.hyphens.language_latin Edge11/19/20202082
css.properties.hyphens.language_latvian Edge4/6/20231214
css.properties.hyphens.language_lithuanian Edge4/6/20231214
css.properties.hyphens.language_malayalam Edge11/19/20202082
css.properties.hyphens.language_marathi Edge11/19/20202082
css.properties.hyphens.language_modern_greek Edge4/6/20231214
css.properties.hyphens.language_norwegian_nn Edge11/19/20202082
css.properties.hyphens.language_old_slavonic Edge11/19/20202082
css.properties.hyphens.language_oriya Edge11/19/20202082
css.properties.hyphens.language_polish Safari3/21/20163786
css.properties.hyphens.language_punjabi Edge11/19/20202082
css.properties.hyphens.language_slovak Edge4/6/20231214
css.properties.hyphens.language_slovenian Edge11/19/20202082
css.properties.hyphens.language_tamil Edge11/19/20202082
css.properties.hyphens.language_telugu Edge11/19/20202082
css.properties.hyphens.language_turkish Safari7/20/20115492
css.properties.hyphens.language_turkmen Edge11/19/20202082
css.properties.hyphens.language_welsh Edge11/19/20202082
css.properties.image-rendering.optimizeQuality Safari10/22/20134667
css.properties.image-rendering.optimizeSpeed Safari10/22/20134667
css.properties.inline-size.anchor-size 📋Edge5/17/2024807
css.properties.inset.anchor 📋Edge5/17/2024807
css.properties.inset.anchor-size 📋Edge1/17/2025562
css.properties.inset-block.anchor 📋Edge5/17/2024807
css.properties.inset-block.anchor-size 📋Edge1/17/2025562
css.properties.inset-block-end.anchor 📋Edge5/17/2024807
css.properties.inset-block-end.anchor-size 📋Edge1/17/2025562
css.properties.inset-block-start.anchor 📋Edge5/17/2024807
css.properties.inset-block-start.anchor-size 📋Edge1/17/2025562
css.properties.inset-inline.anchor 📋Edge5/17/2024807
css.properties.inset-inline.anchor-size 📋Edge1/17/2025562
css.properties.inset-inline-end.anchor 📋Edge5/17/2024807
css.properties.inset-inline-end.anchor-size 📋Edge1/17/2025562
css.properties.inset-inline-start.anchor 📋Edge5/17/2024807
css.properties.inset-inline-start.anchor-size 📋Edge1/17/2025562
css.properties.interpolate-size 📋Edge9/19/2024682
css.properties.interpolate-size.allow-keywords 📋Edge9/19/2024682
css.properties.interpolate-size.numeric-only 📋Edge9/19/2024682
css.properties.justify-items.anchor-center 📋Edge5/17/2024807
css.properties.justify-self.anchor-center 📋Edge5/17/2024807
css.properties.justify-self.position_absolute_context 📋Edge2/23/2024891
css.properties.left.anchor 📋Edge5/17/2024807
css.properties.left.anchor-size 📋Edge1/17/2025562
css.properties.line-clamp.none Safari12/11/2024599
css.properties.line-height-step 📋Edge1/15/20202391
css.properties.margin.anchor-size 📋Edge1/17/2025562
css.properties.margin-block.anchor-size 📋Edge1/17/2025562
css.properties.margin-block-end.anchor-size 📋Edge1/17/2025562
css.properties.margin-block-start.anchor-size 📋Edge1/17/2025562
css.properties.margin-bottom.anchor-size 📋Edge1/17/2025562
css.properties.margin-inline.anchor-size 📋Edge1/17/2025562
css.properties.margin-inline-end.anchor-size 📋Edge1/17/2025562
css.properties.margin-inline-start.anchor-size 📋Edge1/17/2025562
css.properties.margin-left.anchor-size 📋Edge1/17/2025562
css.properties.margin-right.anchor-size 📋Edge1/17/2025562
css.properties.margin-top.anchor-size 📋Edge1/17/2025562
css.properties.margin-trim 📋Safari3/27/20231224
css.properties.margin-trim.block 📋Safari3/27/20231224
css.properties.margin-trim.block-end 📋Safari3/27/20231224
css.properties.margin-trim.block-start 📋Safari3/27/20231224
css.properties.margin-trim.inline 📋Safari3/27/20231224
css.properties.margin-trim.inline-end 📋Safari3/27/20231224
css.properties.margin-trim.inline-start 📋Safari3/27/20231224
css.properties.margin-trim.none 📋Safari3/27/20231224
css.properties.mask-origin.fill-box Edge12/7/2023969
css.properties.mask-origin.stroke-box Edge12/7/2023969
css.properties.mask-origin.view-box Edge12/7/2023969
css.properties.math-depth 📋Edge1/12/20231298
css.properties.math-shift 📋Edge1/12/20231298
css.properties.max-block-size.anchor-size 📋Edge5/17/2024807
css.properties.max-height.anchor-size 📋Edge5/17/2024807
css.properties.max-height.stretch 📋Edge1/15/20202391
css.properties.max-inline-size.anchor-size 📋Edge5/17/2024807
css.properties.max-width.anchor-size 📋Edge5/17/2024807
css.properties.max-width.stretch 📋Edge1/15/20202391
css.properties.min-block-size.anchor-size 📋Edge5/17/2024807
css.properties.min-height.anchor-size 📋Edge5/17/2024807
css.properties.min-inline-size.anchor-size 📋Edge5/17/2024807
css.properties.min-width.anchor-size 📋Edge5/17/2024807
css.properties.min-width.stretch Edge1/15/20202391
css.properties.mix-blend-mode.plus-darker 📋Safari3/24/20202322
css.properties.mix-blend-mode.svg_elements Edge1/15/20202391
css.properties.object-view-box 📋Edge8/5/20221458
css.properties.object-view-box.none 📋Edge8/5/20221458
css.properties.offset-path.margin-box 📋Safari9/16/2024685
css.properties.overflow-anchor 📋Edge1/15/20202391
css.properties.overflow-anchor.auto 📋Edge1/15/20202391
css.properties.overflow-anchor.none 📋Edge1/15/20202391
css.properties.overflow-clip-margin 📋Edge4/15/20211935
Chrome: Only works when both axes are using overflow: clip. See bug 40235584.Chrome Android: Only works when both axes are using overflow: clip. See bug 40235584.Edge: Only works when both axes are using overflow: clip. See bug 40235584.Firefox: Only supports using a length, not a visual box. See bug 1661582.Firefox for Android: Only supports using a length, not a visual box. See bug 1661582.Quest Browser: Only works when both axes are using overflow: clip. See bug 40235584.Opera: Only works when both axes are using overflow: clip. See bug 40235584.Opera Android: Only works when both axes are using overflow: clip. See bug 40235584.Samsung Internet: Only works when both axes are using overflow: clip. See bug 40235584.WebView Android: Only works when both axes are using overflow: clip. See bug 40235584.
css.properties.overflow-clip-margin.border-box 📋Edge8/5/20221458
css.properties.overflow-clip-margin.content-box 📋Edge8/5/20221458
css.properties.overflow-clip-margin.padding-box 📋Edge8/5/20221458
css.properties.overlay 📋Edge9/15/20231052
css.properties.overlay.auto 📋Edge9/15/20231052
css.properties.overlay.none 📋Edge9/15/20231052
css.properties.page-break-after.avoid 📋Edge7/29/20154022
css.properties.page-break-before.avoid 📋Edge7/29/20154022
css.properties.place-items.anchor-center 📋Edge5/17/2024807
css.properties.place-self.anchor-center 📋Edge5/17/2024807
css.properties.place-self.position_absolute_context 📋Edge2/23/2024891
css.properties.position-anchor 📋Edge5/17/2024807
css.properties.position-anchor.auto 📋Edge5/17/2024807
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 📋Edge9/19/2024682
css.properties.position-area.block-end 📋Edge9/19/2024682
css.properties.position-area.block-start 📋Edge9/19/2024682
css.properties.position-area.bottom 📋Edge9/19/2024682
css.properties.position-area.center 📋Edge9/19/2024682
css.properties.position-area.end 📋Edge9/19/2024682
css.properties.position-area.inline-end 📋Edge9/19/2024682
css.properties.position-area.inline-start 📋Edge9/19/2024682
css.properties.position-area.left 📋Edge9/19/2024682
css.properties.position-area.none 📋Edge9/19/2024682
css.properties.position-area.right 📋Edge9/19/2024682
css.properties.position-area.self-end 📋Edge9/19/2024682
css.properties.position-area.self-start 📋Edge9/19/2024682
css.properties.position-area.span-all 📋Edge9/19/2024682
css.properties.position-area.span-block-end 📋Edge9/19/2024682
css.properties.position-area.span-block-start 📋Edge9/19/2024682
css.properties.position-area.span-bottom 📋Edge9/19/2024682
css.properties.position-area.span-end 📋Edge9/19/2024682
css.properties.position-area.span-inline-end 📋Edge9/19/2024682
css.properties.position-area.span-inline-start 📋Edge9/19/2024682
css.properties.position-area.span-start 📋Edge9/19/2024682
css.properties.position-area.span-top 📋Edge9/19/2024682
css.properties.position-area.span-x-end 📋Edge9/19/2024682
css.properties.position-area.span-x-start 📋Edge9/19/2024682
css.properties.position-area.span-y-end 📋Edge9/19/2024682
css.properties.position-area.span-y-start 📋Edge9/19/2024682
css.properties.position-area.start 📋Edge9/19/2024682
css.properties.position-area.top 📋Edge9/19/2024682
css.properties.position-area.x-end 📋Edge9/19/2024682
css.properties.position-area.x-self-end 📋Edge9/19/2024682
css.properties.position-area.x-self-start 📋Edge9/19/2024682
css.properties.position-area.x-start 📋Edge9/19/2024682
css.properties.position-area.y-end 📋Edge9/19/2024682
css.properties.position-area.y-self-end 📋Edge9/19/2024682
css.properties.position-area.y-self-start 📋Edge9/19/2024682
css.properties.position-area.y-start 📋Edge9/19/2024682
css.properties.position-try 📋Edge5/17/2024807
css.properties.position-try-fallbacks 📋Edge8/22/2024710
css.properties.position-try-fallbacks.flip-block 📋Edge8/22/2024710
css.properties.position-try-fallbacks.flip-inline 📋Edge8/22/2024710
css.properties.position-try-fallbacks.flip-start 📋Edge8/22/2024710
css.properties.position-try-fallbacks.none 📋Edge8/22/2024710
css.properties.position-try-fallbacks.position-area 📋Edge8/22/2024710
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 📋Edge5/17/2024807
css.properties.position-try-order.most-block-size 📋Edge5/17/2024807
css.properties.position-try-order.most-height 📋Edge5/17/2024807
css.properties.position-try-order.most-inline-size 📋Edge5/17/2024807
css.properties.position-try-order.most-width 📋Edge5/17/2024807
css.properties.position-try-order.normal 📋Edge5/17/2024807
css.properties.position-visibility 📋Edge5/17/2024807
css.properties.position-visibility.always 📋Edge5/17/2024807
css.properties.position-visibility.anchors-visible 📋Edge5/17/2024807
css.properties.position-visibility.no-overflow 📋Edge5/17/2024807
css.properties.print-color-adjust.economy 📋Safari7/25/20125121
css.properties.print-color-adjust.exact 📋Safari7/25/20125121
css.properties.reading-flow 📋Edge8/22/2024710
css.properties.right.anchor 📋Edge5/17/2024807
css.properties.right.anchor-size 📋Edge1/17/2025562
css.properties.ruby-overhang 📋Safari12/11/2024599
css.properties.ruby-overhang.auto 📋Safari12/11/2024599
css.properties.ruby-overhang.none 📋Safari12/11/2024599
css.properties.rx 📋Edge2/7/20202368
Safari: The value is recognized, but has no effect. This property is only recognized as an attribute applied to the SVG element. See bug 266090.Safari on iOS: The value is recognized, but has no effect. This property is only recognized as an attribute applied to the SVG element. See bug 266090.WebView on iOS: The value is recognized, but has no effect. This property is only recognized as an attribute applied to the SVG element. See bug 266090.
css.properties.ry 📋Edge2/7/20202368
Safari: The value is recognized, but has no effect. This property is only recognized as an attribute applied to the SVG element. See bug 266090.Safari on iOS: The value is recognized, but has no effect. This property is only recognized as an attribute applied to the SVG element. See bug 266090.WebView on iOS: The value is recognized, but has no effect. This property is only recognized as an attribute applied to the SVG element. See bug 266090.
css.properties.scroll-initial-target 📋Edge2/6/2025542
css.properties.scroll-initial-target.nearest 📋Edge2/6/2025542
css.properties.scroll-initial-target.none 📋Edge2/6/2025542
css.properties.scroll-timeline 📋Edge7/21/20231108
Firefox: The syntax of the shorthand property uses the fixed order of name and then the axis.Firefox: Supports the deprecated horizontal and vertical axis values, and not the x and y values.Firefox: The @scroll-timeline at-rule is replaced with the longhand properties scroll-timeline-name and scroll-timeline-axis and the shorthand property scroll-timeline.
css.properties.scroll-timeline-axis 📋Edge7/21/20231108
Firefox: The syntax of the shorthand property uses the fixed order of name and then the axis.Firefox: Supports the deprecated horizontal and vertical values, and not the x and y values.Firefox: The @scroll-timeline at-rule is replaced with the longhand properties scroll-timeline-name and scroll-timeline-axis and the shorthand property scroll-timeline.
css.properties.scroll-timeline-axis.block 📋Edge7/21/20231108
css.properties.scroll-timeline-axis.inline 📋Edge7/21/20231108
css.properties.scroll-timeline-axis.x 📋Edge7/21/20231108
css.properties.scroll-timeline-axis.y 📋Edge7/21/20231108
css.properties.scroll-timeline-name 📋Edge7/21/20231108
Firefox: The syntax of the shorthand property uses the fixed order of name and then the axis.Firefox: The @scroll-timeline at-rule is replaced with the longhand properties scroll-timeline-name and scroll-timeline-axis and the shorthand property scroll-timeline.
css.properties.scrollbar-color 📋Edge1/25/2024920
css.properties.scrollbar-color.auto 📋Edge1/25/2024920
css.properties.shape-image-threshold.percentages Edge1/15/20202391
css.properties.speak 📋Edge2/7/20202368
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.speak-as 📋Safari4/12/20183034
css.properties.speak-as.digits 📋Safari4/12/20183034
css.properties.speak-as.literal-punctuation 📋Safari4/12/20183034
css.properties.speak-as.no-punctuation 📋Safari4/12/20183034
css.properties.speak-as.normal 📋Safari4/12/20183034
css.properties.speak-as.spell-out 📋Safari4/12/20183034
css.properties.stroke-color 📋Safari3/24/20202322
css.properties.text-decoration.includes_thickness Edge11/19/20202082
css.properties.text-decoration-line.grammar-error 📋Edge1/25/2024920
css.properties.text-decoration-line.spelling-error 📋Edge1/25/2024920
css.properties.text-decoration-skip 📋Safari3/25/20192687
Chrome: Only supports the deprecated ink value.Chrome Android: Only supports the deprecated ink value.Opera: Only supports the deprecated ink value.Opera Android: Only supports the deprecated ink value.Safari: Supports only none, auto, and objects values.Safari: Supports only none, auto, and objects values.Safari on iOS: Supports only none, auto, and objects values.Safari on iOS: Supports only none, auto, and objects values.Samsung Internet: Only supports the deprecated ink value.WebView Android: Only supports the deprecated ink value.WebView on iOS: Supports only none, auto, and objects values.WebView on iOS: Supports only none, auto, and objects values.
css.properties.text-decoration-skip.auto 📋Safari3/24/20202322
css.properties.text-decoration-skip.none 📋Safari3/24/20202322
css.properties.text-decoration-skip-ink.all 📋Safari3/14/20221602
css.properties.text-indent.each-line 📋Safari9/20/20211777
css.properties.text-indent.hanging 📋Safari9/20/20211777
css.properties.text-justify 📋Edge1/15/20202391
Chrome: inter-word and distribute (deprecated) values are supported, but distribute behavior is buggy.Chrome Android: inter-word and distribute (deprecated) values are supported, but distribute behavior is buggy.Edge: inter-word and distribute (deprecated) values are supported, but distribute behavior is buggy.Edge: Standard values inter-character and none are supported. The deprecated distribute value is also supported.Internet Explorer: Standard values inter-character and none are supported. The deprecated distribute value is also supported.Quest Browser: inter-word and distribute (deprecated) values are supported, but distribute behavior is buggy.Opera: inter-word and distribute (deprecated) values are supported, but distribute behavior is buggy.
css.properties.text-size-adjust 📋Edge1/15/20202391
css.properties.text-size-adjust.auto 📋Edge1/15/20202391
css.properties.text-size-adjust.none 📋Edge1/15/20202391
css.properties.text-size-adjust.percentages 📋Edge7/29/20154022
css.properties.text-spacing-trim 📋Edge3/22/2024863
css.properties.text-spacing-trim.normal 📋Edge3/22/2024863
css.properties.text-spacing-trim.space-all 📋Edge3/22/2024863
css.properties.text-spacing-trim.space-first 📋Edge3/22/2024863
css.properties.text-spacing-trim.trim-start 📋Edge3/22/2024863
css.properties.text-transform.full-size-kana 📋Safari9/18/20231049
css.properties.text-transform.full-width 📋Safari9/18/20231049
css.properties.text-transform.greek_accented_characters Edge1/15/20202391
css.properties.text-transform.math-auto 📋Edge1/12/20231298
css.properties.text-wrap.pretty 📋Edge9/15/20231052
css.properties.text-wrap-style.pretty 📋Edge10/17/2024654
css.properties.timeline-scope 📋Edge8/21/20231077
css.properties.timeline-scope.all 📋Edge8/21/20231077
css.properties.timeline-scope.none 📋Edge8/21/20231077
css.properties.top.anchor 📋Edge5/17/2024807
css.properties.top.anchor-size 📋Edge1/17/2025562
css.properties.touch-action.pan-down Edge1/15/20202391
css.properties.touch-action.pan-left Edge1/15/20202391
css.properties.touch-action.pan-right Edge1/15/20202391
css.properties.touch-action.pan-up Edge1/15/20202391
css.properties.view-timeline 📋Edge7/21/20231108
Firefox: Now supports the x and y values, and also the deprecated horizontal and vertical values.
css.properties.view-timeline-axis 📋Edge7/21/20231108
Firefox: Now supports the x and y values, and also the deprecated horizontal and vertical values.
css.properties.view-timeline-axis.block 📋Edge7/21/20231108
css.properties.view-timeline-axis.inline 📋Edge7/21/20231108
css.properties.view-timeline-axis.x 📋Edge7/21/20231108
css.properties.view-timeline-axis.y 📋Edge7/21/20231108
css.properties.view-timeline-inset 📋Edge7/21/20231108
css.properties.view-timeline-inset.auto 📋Edge7/21/20231108
css.properties.view-timeline-name 📋Edge7/21/20231108
css.properties.white-space.shorthand_values Edge6/2/20231157
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.width.anchor-size 📋Edge5/17/2024807
css.properties.word-break.auto-phrase 📋Edge11/2/20231004
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 Safari10/22/20134667
css.properties.writing-mode.sideways-lr Edge1/17/2025562
css.properties.writing-mode.sideways-rl Edge1/17/2025562
css.properties.zoom.reset Safari3/18/20086711
css.selectors.-webkit-slider-runnable-track Edge5/21/20202264
css.selectors.-webkit-slider-thumb Edge5/21/20202264
css.selectors.active-view-transition-type 📋Edge5/17/2024807
css.selectors.buffering 📋Safari3/14/20221602
css.selectors.details-content 📋Edge11/14/2024626
css.selectors.first-child.no_parent_required Edge1/15/20202391
css.selectors.host-context 📋Edge1/15/20202391
css.selectors.lang.argument_list Safari9/30/20153959
css.selectors.lang.wildcards Safari9/30/20153959
css.selectors.last-child.no_parent_required Edge1/15/20202391
css.selectors.marker.animation_and_transition_support Edge10/9/20202123
css.selectors.muted 📋Safari3/14/20221602
css.selectors.nth-child.no_parent_required Edge1/15/20202391
css.selectors.nth-last-child.no_parent_required Edge1/15/20202391
css.selectors.only-child.no_parent_required Edge1/15/20202391
css.selectors.open 📋Edge2/6/2025542
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.paused 📋Safari3/14/20221602
css.selectors.playing 📋Safari3/14/20221602
css.selectors.seeking 📋Safari3/14/20221602
css.selectors.selection.text-decoration Edge9/1/20221431
css.selectors.stalled 📋Safari3/14/20221602
css.selectors.volume-locked 📋Safari3/14/20221602
css.selectors.xr-overlay 📋Edge5/21/20202264
css.types.abs 📋Safari3/14/20221602
css.types.anchor 📋Edge5/17/2024807
css.types.anchor-size 📋Edge5/17/2024807
css.types.anchor-size.inset_margin Edge1/17/2025562
css.types.attr.fallback Edge2/6/2025542
css.types.attr.type-or-unit Edge2/6/2025542
css.types.basic-shape.path.d 📋Edge1/15/20202391
css.types.calc-size 📋Edge9/19/2024682
css.types.image.paint 📋Edge1/15/20202391
css.types.sign 📋Safari3/14/20221602