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closest positioned ancestor.", + "description_html": "The position: absolute CSS declaration removes an element from the normal flow and positions it relative to its containing block, which is often the root element, or closest positioned ancestor.", + "group": "positioning", + "name": "Absolute positioning", + "spec": "https://drafts.csswg.org/css-position-3/#abspos-insets", + "status": { + "baseline": "high", + "baseline_high_date": "2018-01-29", + "baseline_low_date": "2015-07-29", + "by_compat_key": { + "css.properties.align-self.position_absolute_context": { + "baseline": false, + "support": { + "chrome": "122", + "chrome_android": "122", + "edge": "122" + } + }, + "css.properties.justify-self.position_absolute_context": { + "baseline": false, + "support": { + "chrome": "122", + "chrome_android": "122", + "edge": "122" + } + }, + "css.properties.place-self.position_absolute_context": { + "baseline": false, + "support": { + "chrome": "122", + "chrome_android": "122", + "edge": "122" + } + }, + "css.properties.position.absolute": { + "baseline": "high", + "baseline_high_date": "2018-01-29", + "baseline_low_date": "2015-07-29", + "support": { + "chrome": "1", + "chrome_android": "18", + "edge": "12", + "firefox": "1", + "firefox_android": "4", + "safari": "1", + "safari_ios": "1" + } + } + }, + "support": { + "chrome": "1", + "chrome_android": "18", + "edge": "12", + "firefox": "1", + "firefox_android": "4", + "safari": "1", + "safari_ios": "1" + } + } + }, + "accelerometer": { + "compat_features": [ + "api.Accelerometer", + "api.Accelerometer.Accelerometer", + "api.Accelerometer.x", + "api.Accelerometer.y", + "api.Accelerometer.z", + "api.GravitySensor", + "api.GravitySensor.GravitySensor", + "api.LinearAccelerationSensor", + "api.LinearAccelerationSensor.LinearAccelerationSensor", + "api.Permissions.permission_accelerometer", + "http.headers.Permissions-Policy.accelerometer" + ], + "description": "The Accelerometer, LinearAccelerationSensor and GravitySensor APIs read the acceleration applied to a device in three dimensions, either including the effect of gravity, without its effect, or only its effect, respectively.", + "description_html": "The Accelerometer, LinearAccelerationSensor and GravitySensor APIs read the acceleration applied to a device in three dimensions, either including the effect of gravity, without its effect, or only its effect, respectively.", + "group": "sensors", + "name": "Accelerometer", + "spec": "https://w3c.github.io/accelerometer/", + "status": { + "baseline": false, + "by_compat_key": { + "api.Accelerometer": { + "baseline": false, + "support": { + "chrome": "67", + "chrome_android": "67", + "edge": "79" + } + }, + "api.Accelerometer.Accelerometer": { + "baseline": false, + "support": { + "chrome": "67", + "chrome_android": "67", + "edge": "79" + } + }, + "api.Accelerometer.x": { + "baseline": false, + "support": { + "chrome": "67", + "chrome_android": "67", + "edge": "79" + } + }, + "api.Accelerometer.y": { + "baseline": false, + "support": { + "chrome": "67", + "chrome_android": "67", + "edge": "79" + } + }, + "api.Accelerometer.z": { + "baseline": false, + "support": { + "chrome": "67", + "chrome_android": "67", + "edge": "79" + } + }, + "api.GravitySensor": { + "baseline": false, + "support": { + "chrome": "91", + "chrome_android": "91", + "edge": "91" + } + }, + "api.GravitySensor.GravitySensor": { + "baseline": false, + "support": { + "chrome": "91", + "chrome_android": "91", + "edge": "91" + } + }, + "api.LinearAccelerationSensor": { + "baseline": false, + "support": { + "chrome": "67", + "chrome_android": "67", + "edge": "79" + } + }, + "api.LinearAccelerationSensor.LinearAccelerationSensor": { + "baseline": false, + "support": { + "chrome": "67", + "chrome_android": "67", + "edge": "79" + } + }, + "api.Permissions.permission_accelerometer": { + "baseline": false, + "support": { + "chrome": "62", + "chrome_android": "62", + "edge": "79" + } + }, + "http.headers.Permissions-Policy.accelerometer": { + "baseline": false, + "support": { + "chrome": "88", + "chrome_android": "88", + "edge": "88" + } + } + }, + "support": { + "chrome": "91", + "chrome_android": "91", + "edge": "91" + } + } + }, + "accent-color": { + "compat_features": [ + "css.properties.accent-color", + "css.properties.accent-color.auto" + ], + "description": "The accent-color CSS property sets a color for checkboxes, radio buttons, and other form controls.", + "description_html": "The accent-color CSS property sets a color for checkboxes, radio buttons, and other form controls.", + "group": "css", + "name": "accent-color", + "spec": "https://drafts.csswg.org/css-ui-4/#widget-accent", + "status": { + "baseline": false, + "by_compat_key": { + "css.properties.accent-color": { + "baseline": false, + "support": { + "chrome": "93", + "chrome_android": "93", + "edge": "93", + "firefox": "92", + "firefox_android": "92" + } + }, + "css.properties.accent-color.auto": { + "baseline": false, + "support": { + "chrome": "93", + "chrome_android": "93", + "edge": "93", + "firefox": "92", + "firefox_android": "92" + } + } + }, + "support": { + "chrome": "93", + "chrome_android": "93", + "edge": "93", + "firefox": "92", + "firefox_android": "92" + } + } + }, + "active-view-transition": { + "compat_features": [ + "api.ViewTransition.types", + "api.ViewTransitionTypeSet", + "api.ViewTransitionTypeSet.@@iterator", + "api.ViewTransitionTypeSet.add", + "api.ViewTransitionTypeSet.clear", + "api.ViewTransitionTypeSet.delete", + "api.ViewTransitionTypeSet.entries", + "api.ViewTransitionTypeSet.forEach", + "api.ViewTransitionTypeSet.has", + "api.ViewTransitionTypeSet.keys", + "api.ViewTransitionTypeSet.size", + "api.ViewTransitionTypeSet.values", + "css.selectors.active-view-transition", + "css.selectors.active-view-transition-type" + ], + "description": "The ::active-view-transition CSS pseudo-class matches the root element when a view transition is active. The ::active-view-transition-type() CSS pseudo-class matches only when the active view transition was started with the specified type.", + "description_html": "The ::active-view-transition CSS pseudo-class matches the root element when a view transition is active. The ::active-view-transition-type() CSS pseudo-class matches only when the active view transition was started with the specified type.", + "group": [ + "view-transitions", + "selectors" + ], + "name": "Active view transition", + "spec": "https://drafts.csswg.org/css-view-transitions-2/#the-active-view-transition-pseudo", + "status": { + "baseline": false, + "by_compat_key": { + "api.ViewTransition.types": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.ViewTransitionTypeSet": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.ViewTransitionTypeSet.@@iterator": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.ViewTransitionTypeSet.add": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.ViewTransitionTypeSet.clear": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.ViewTransitionTypeSet.delete": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.ViewTransitionTypeSet.entries": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.ViewTransitionTypeSet.forEach": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.ViewTransitionTypeSet.has": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.ViewTransitionTypeSet.keys": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.ViewTransitionTypeSet.size": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.ViewTransitionTypeSet.values": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "css.selectors.active-view-transition": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125", + "safari": "18", + "safari_ios": "18" + } + }, + "css.selectors.active-view-transition-type": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + } + }, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + } + }, + "address": { + "compat_features": [ + "html.elements.address" + ], + "description": "The
element represents contact information for a person or people, or for an organization.", + "description_html": "The <address> element represents contact information for a person or people, or for an organization.", + "group": "html-elements", + "name": "
", + "spec": "https://html.spec.whatwg.org/multipage/sections.html#the-address-element", + "status": { + "baseline": "high", + "baseline_high_date": "2018-01-29", + "baseline_low_date": "2015-07-29", + "by_compat_key": { + "html.elements.address": { + "baseline": "high", + "baseline_high_date": "2018-01-29", + "baseline_low_date": "2015-07-29", + "support": { + "chrome": "1", + "chrome_android": "18", + "edge": "12", + "firefox": "1", + "firefox_android": "4", + "safari": "1", + "safari_ios": "1" + } + } + }, + "support": { + "chrome": "1", + "chrome_android": "18", + "edge": "12", + "firefox": "1", + "firefox_android": "4", + "safari": "1", + "safari_ios": "1" + } + } + }, + "align-content-block": { + "compat_features": [ + "css.properties.align-content.block_context" + ], + "description": "The align-content property vertically aligns content in block layouts, like it does in flex or grid layouts.", + "description_html": "The align-content property vertically aligns content in block layouts, like it does in flex or grid layouts.", + "group": "layout", + "name": "align-content in block layouts", + "spec": "https://drafts.csswg.org/css-align-3/#align-justify-content", + "status": { + "baseline": "low", + "baseline_low_date": "2024-04-16", + "by_compat_key": { + "css.properties.align-content.block_context": { + "baseline": "low", + "baseline_low_date": "2024-04-16", + "support": { + "chrome": "123", + "chrome_android": "123", + "edge": "123", + "firefox": "125", + "firefox_android": "125", + "safari": "17.4", + "safari_ios": "17.4" + } + } + }, + "support": { + "chrome": "123", + "chrome_android": "123", + "edge": "123", + "firefox": "125", + "firefox_android": "125", + "safari": "17.4", + "safari_ios": "17.4" + } + } + }, + "alignment-baseline": { + "compat_features": [ + "css.properties.alignment-baseline", + "css.properties.alignment-baseline.alphabetic", + "css.properties.alignment-baseline.baseline", + "css.properties.alignment-baseline.central", + "css.properties.alignment-baseline.ideographic", + "css.properties.alignment-baseline.mathematical", + "css.properties.alignment-baseline.middle" + ], + "description": "The alignment-baseline CSS property sets which baseline of an element is aligned with the corresponding baseline of its parent.", + "description_html": "The alignment-baseline CSS property sets which baseline of an element is aligned with the corresponding baseline of its parent.", + "group": "text", + "name": "alignment-baseline", + "spec": "https://drafts.csswg.org/css-inline-3/#alignment-baseline-property", + "status": { + "baseline": false, + "by_compat_key": { + "css.properties.alignment-baseline": { + "baseline": false, + "support": { + "chrome": "≤80", + "chrome_android": "80", + "edge": "≤80", + "safari": "≤13.1", + "safari_ios": "≤13.4" + } + }, + "css.properties.alignment-baseline.alphabetic": { + "baseline": false, + "support": { + "chrome": "≤80", + "chrome_android": "80", + "edge": "80", + "safari": "≤13.1", + "safari_ios": "≤13.4" + } + }, + "css.properties.alignment-baseline.baseline": { + "baseline": false, + "support": { + "chrome": "≤80", + "chrome_android": "80", + "edge": "80", + "safari": "≤13.1", + "safari_ios": "≤13.4" + } + }, + "css.properties.alignment-baseline.central": { + "baseline": false, + "support": { + "chrome": "≤80", + "chrome_android": "80", + "edge": "80", + "safari": "≤13.1", + "safari_ios": "≤13.4" + } + }, + "css.properties.alignment-baseline.ideographic": { + "baseline": false, + "support": { + "chrome": "≤80", + "chrome_android": "80", + "edge": "80", + "safari": "≤13.1", + "safari_ios": "≤13.4" + } + }, + "css.properties.alignment-baseline.mathematical": { + "baseline": false, + "support": { + "chrome": "≤80", + "chrome_android": "80", + "edge": "80", + "safari": "≤13.1", + "safari_ios": "≤13.4" + } + }, + "css.properties.alignment-baseline.middle": { + "baseline": false, + "support": { + "chrome": "≤80", + "chrome_android": "80", + "edge": "80", + "safari": "≤13.1", + "safari_ios": "≤13.4" + } + } + }, + "support": { + "chrome": "≤80", + "chrome_android": "80", + "edge": "80", + "safari": "≤13.1", + "safari_ios": "≤13.4" + } + } + }, + "all": { + "caniuse": "css-all", + "compat_features": [ + "css.properties.all" + ], + "description": "The all CSS property is a shorthand for all CSS properties, except for direction and unicode-bidi. It accepts only the keywords for explicit defaulting (such as initial and inherit), since they are the only values supported on all CSS properties.", + "description_html": "The all CSS property is a shorthand for all CSS properties, except for direction and unicode-bidi. It accepts only the keywords for explicit defaulting (such as initial and inherit), since they are the only values supported on all CSS properties.", + "group": "explicit-defaults", + "name": "all", + "spec": "https://drafts.csswg.org/css-cascade-6/", + "status": { + "baseline": "high", + "baseline_high_date": "2022-07-15", + "baseline_low_date": "2020-01-15", + "by_compat_key": { + "css.properties.all": { + "baseline": "high", + "baseline_high_date": "2022-07-15", + "baseline_low_date": "2020-01-15", + "support": { + "chrome": "37", + "chrome_android": "37", + "edge": "79", + "firefox": "27", + "firefox_android": "27", + "safari": "9.1", + "safari_ios": "9.3" + } + } + }, + "support": { + "chrome": "37", + "chrome_android": "37", + "edge": "79", + "firefox": "27", + "firefox_android": "27", + "safari": "9.1", + "safari_ios": "9.3" + } + } + }, + "alt-text-generated-content": { + "compat_features": [ + "css.properties.content.alt_text" + ], + "description": "The / notation in content CSS property values adds alternative text to generated content. For example, the content: url('upvote-icon.svg') / 'Upvote' declaration adds accessible 'Upvote' text to the SVG icon. Also known as alternate text.", + "description_html": "The / notation in content CSS property values adds alternative text to generated content. For example, the content: url('upvote-icon.svg') / 'Upvote' declaration adds accessible 'Upvote' text to the SVG icon. Also known as alternate text.", + "group": "css", + "name": "Alt text for generated content", + "spec": "https://drafts.csswg.org/css-content-3/#alt", + "status": { + "baseline": "low", + "baseline_low_date": "2024-07-09", + "by_compat_key": { + "css.properties.content.alt_text": { + "baseline": "low", + "baseline_low_date": "2024-07-09", + "support": { + "chrome": "77", + "chrome_android": "77", + "edge": "79", + "firefox": "128", + "firefox_android": "128", + "safari": "17.4", + "safari_ios": "17.4" + } + } + }, + "support": { + "chrome": "77", + "chrome_android": "77", + "edge": "79", + "firefox": "128", + "firefox_android": "128", + "safari": "17.4", + "safari_ios": "17.4" + } + } + }, + "alternative-style-sheets": { + "compat_features": [ + "html.elements.link.rel.alternate_stylesheet" + ], + "description": "The rel=\"alternate stylesheet\" attribute for the HTML element offers an alternative style option to users.", + "description_html": "The rel=\"alternate stylesheet\" attribute for the <link> HTML element offers an alternative style option to users.", + "group": "css", + "name": "Alternative style sheets", + "spec": "https://drafts.csswg.org/cssom-1/#concept-css-style-sheet-alternate-flag", + "status": { + "baseline": false, + "by_compat_key": { + "html.elements.link.rel.alternate_stylesheet": { + "baseline": false, + "support": { + "firefox": "3", + "firefox_android": "4" + } + } + }, + "support": { + "firefox": "3", + "firefox_android": "4" + } + } + }, + "anchor-positioning": { + "caniuse": "css-anchor-positioning", + "compat_features": [ + "api.CSSPositionTryDescriptors", + "api.CSSPositionTryDescriptors.align-self", + "api.CSSPositionTryDescriptors.alignSelf", + "api.CSSPositionTryDescriptors.block-size", + "api.CSSPositionTryDescriptors.blockSize", + "api.CSSPositionTryDescriptors.bottom", + "api.CSSPositionTryDescriptors.height", + "api.CSSPositionTryDescriptors.inline-size", + "api.CSSPositionTryDescriptors.inlineSize", + "api.CSSPositionTryDescriptors.inset", + "api.CSSPositionTryDescriptors.inset-block", + "api.CSSPositionTryDescriptors.inset-block-end", + "api.CSSPositionTryDescriptors.inset-block-start", + "api.CSSPositionTryDescriptors.inset-inline", + "api.CSSPositionTryDescriptors.inset-inline-end", + "api.CSSPositionTryDescriptors.inset-inline-start", + "api.CSSPositionTryDescriptors.insetBlock", + "api.CSSPositionTryDescriptors.insetBlockEnd", + "api.CSSPositionTryDescriptors.insetBlockStart", + "api.CSSPositionTryDescriptors.insetInline", + "api.CSSPositionTryDescriptors.insetInlineEnd", + "api.CSSPositionTryDescriptors.insetInlineStart", + "api.CSSPositionTryDescriptors.justify-self", + "api.CSSPositionTryDescriptors.justifySelf", + "api.CSSPositionTryDescriptors.left", + "api.CSSPositionTryDescriptors.margin", + "api.CSSPositionTryDescriptors.margin-block", + "api.CSSPositionTryDescriptors.margin-block-end", + "api.CSSPositionTryDescriptors.margin-block-start", + "api.CSSPositionTryDescriptors.margin-bottom", + "api.CSSPositionTryDescriptors.margin-inline", + "api.CSSPositionTryDescriptors.margin-inline-end", + "api.CSSPositionTryDescriptors.margin-inline-start", + "api.CSSPositionTryDescriptors.margin-left", + "api.CSSPositionTryDescriptors.margin-right", + "api.CSSPositionTryDescriptors.margin-top", + "api.CSSPositionTryDescriptors.marginBlock", + "api.CSSPositionTryDescriptors.marginBlockEnd", + "api.CSSPositionTryDescriptors.marginBlockStart", + "api.CSSPositionTryDescriptors.marginBottom", + "api.CSSPositionTryDescriptors.marginInline", + "api.CSSPositionTryDescriptors.marginInlineEnd", + "api.CSSPositionTryDescriptors.marginInlineStart", + "api.CSSPositionTryDescriptors.marginLeft", + "api.CSSPositionTryDescriptors.marginRight", + "api.CSSPositionTryDescriptors.marginTop", + "api.CSSPositionTryDescriptors.max-block-size", + "api.CSSPositionTryDescriptors.max-height", + "api.CSSPositionTryDescriptors.max-inline-size", + "api.CSSPositionTryDescriptors.max-width", + "api.CSSPositionTryDescriptors.maxBlockSize", + "api.CSSPositionTryDescriptors.maxHeight", + "api.CSSPositionTryDescriptors.maxInlineSize", + "api.CSSPositionTryDescriptors.maxWidth", + "api.CSSPositionTryDescriptors.min-block-size", + "api.CSSPositionTryDescriptors.min-height", + "api.CSSPositionTryDescriptors.min-inline-size", + "api.CSSPositionTryDescriptors.min-width", + "api.CSSPositionTryDescriptors.minBlockSize", + "api.CSSPositionTryDescriptors.minHeight", + "api.CSSPositionTryDescriptors.minInlineSize", + "api.CSSPositionTryDescriptors.minWidth", + "api.CSSPositionTryDescriptors.place-self", + "api.CSSPositionTryDescriptors.placeSelf", + "api.CSSPositionTryDescriptors.position-anchor", + "api.CSSPositionTryDescriptors.position-area", + "api.CSSPositionTryDescriptors.positionAnchor", + "api.CSSPositionTryDescriptors.positionArea", + "api.CSSPositionTryDescriptors.right", + "api.CSSPositionTryDescriptors.top", + "api.CSSPositionTryDescriptors.width", + "api.CSSPositionTryRule", + "api.CSSPositionTryRule.name", + "api.CSSPositionTryRule.style", + "css.at-rules.position-try", + "css.properties.align-items.anchor-center", + "css.properties.align-self.anchor-center", + "css.properties.anchor-name", + "css.properties.anchor-name.none", + "css.properties.anchor-scope", + "css.properties.anchor-scope.all", + "css.properties.anchor-scope.none", + "css.properties.block-size.anchor-size", + "css.properties.bottom.anchor", + "css.properties.height.anchor-size", + "css.properties.inline-size.anchor-size", + "css.properties.inset-block-end.anchor", + "css.properties.inset-block-start.anchor", + "css.properties.inset-block.anchor", + "css.properties.inset-inline-end.anchor", + "css.properties.inset-inline-start.anchor", + "css.properties.inset-inline.anchor", + "css.properties.inset.anchor", + "css.properties.justify-items.anchor-center", + "css.properties.justify-self.anchor-center", + "css.properties.left.anchor", + "css.properties.max-block-size.anchor-size", + "css.properties.max-height.anchor-size", + "css.properties.max-inline-size.anchor-size", + "css.properties.max-width.anchor-size", + "css.properties.min-block-size.anchor-size", + "css.properties.min-height.anchor-size", + "css.properties.min-inline-size.anchor-size", + "css.properties.min-width.anchor-size", + "css.properties.place-items.anchor-center", + "css.properties.place-self.anchor-center", + "css.properties.position-anchor", + "css.properties.position-anchor.auto", + "css.properties.position-area", + "css.properties.position-area.block-end", + "css.properties.position-area.block-start", + "css.properties.position-area.bottom", + "css.properties.position-area.center", + "css.properties.position-area.end", + "css.properties.position-area.inline-end", + "css.properties.position-area.inline-start", + "css.properties.position-area.left", + "css.properties.position-area.none", + "css.properties.position-area.right", + "css.properties.position-area.self-end", + "css.properties.position-area.self-start", + "css.properties.position-area.span-all", + "css.properties.position-area.span-block-end", + "css.properties.position-area.span-block-start", + "css.properties.position-area.span-bottom", + "css.properties.position-area.span-end", + "css.properties.position-area.span-inline-end", + "css.properties.position-area.span-inline-start", + "css.properties.position-area.span-start", + "css.properties.position-area.span-top", + "css.properties.position-area.span-x-end", + "css.properties.position-area.span-x-start", + "css.properties.position-area.span-y-end", + "css.properties.position-area.span-y-start", + "css.properties.position-area.start", + "css.properties.position-area.top", + "css.properties.position-area.x-end", + "css.properties.position-area.x-self-end", + "css.properties.position-area.x-self-start", + "css.properties.position-area.x-start", + "css.properties.position-area.y-end", + "css.properties.position-area.y-self-end", + "css.properties.position-area.y-self-start", + "css.properties.position-area.y-start", + "css.properties.position-try", + "css.properties.position-try-fallbacks", + "css.properties.position-try-fallbacks.flip-block", + "css.properties.position-try-fallbacks.flip-inline", + "css.properties.position-try-fallbacks.flip-start", + "css.properties.position-try-fallbacks.none", + "css.properties.position-try-fallbacks.position-area", + "css.properties.position-try-order", + "css.properties.position-try-order.most-block-size", + "css.properties.position-try-order.most-height", + "css.properties.position-try-order.most-inline-size", + "css.properties.position-try-order.most-width", + "css.properties.position-try-order.normal", + "css.properties.position-visibility", + "css.properties.position-visibility.always", + "css.properties.position-visibility.anchors-visible", + "css.properties.position-visibility.no-overflow", + "css.properties.right.anchor", + "css.properties.top.anchor", + "css.properties.width.anchor-size", + "css.types.anchor", + "css.types.anchor-size" + ], + "description": "Anchor positioning places an element based on the position of another element. For example, you can place a tooltip next to the content it references.", + "description_html": "Anchor positioning places an element based on the position of another element. For example, you can place a tooltip next to the content it references.", + "name": "Anchor positioning", + "spec": "https://drafts.csswg.org/css-anchor-position-1/#anchoring", + "status": { + "baseline": false, + "by_compat_key": { + "api.CSSPositionTryDescriptors": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.CSSPositionTryDescriptors.align-self": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.CSSPositionTryDescriptors.alignSelf": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.CSSPositionTryDescriptors.block-size": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "api.CSSPositionTryDescriptors.blockSize": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + 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+ "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "css.properties.align-self.anchor-center": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "css.properties.anchor-name": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "css.properties.anchor-name.none": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + }, + "css.properties.anchor-scope": { + "baseline": false, + "support": { + "chrome": "131" + } + }, + "css.properties.anchor-scope.all": { + "baseline": false, + "support": { + "chrome": "131" + } + }, + "css.properties.anchor-scope.none": { + "baseline": false, + "support": { + "chrome": "131" + } + }, + "css.properties.block-size.anchor-size": { + "baseline": false, + "support": { + "chrome": "125", + "chrome_android": "125", + "edge": "125" + } + 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"12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-duration.auto": { + "baseline": false, + "support": { + "chrome": "115", + "chrome_android": "115", + "edge": "115" + } + }, + "css.properties.animation-fill-mode": { + "baseline": "high", + "baseline_high_date": "2018-03-30", + "baseline_low_date": "2015-09-30", + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-fill-mode.backwards": { + "baseline": "high", + "baseline_high_date": "2018-03-30", + "baseline_low_date": "2015-09-30", + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-fill-mode.both": { + "baseline": "high", + "baseline_high_date": "2018-03-30", + "baseline_low_date": "2015-09-30", + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-fill-mode.forwards": { + "baseline": "high", + "baseline_high_date": "2018-03-30", + "baseline_low_date": "2015-09-30", + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-fill-mode.none": { + "baseline": "high", + "baseline_high_date": "2018-03-30", + "baseline_low_date": "2015-09-30", + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-iteration-count": { + "baseline": "high", + "baseline_high_date": "2018-03-30", + "baseline_low_date": "2015-09-30", + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-iteration-count.infinite": { + "baseline": "high", + "baseline_high_date": "2018-03-30", + "baseline_low_date": "2015-09-30", + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-name": { + "baseline": "high", + "baseline_high_date": "2018-03-30", + "baseline_low_date": "2015-09-30", + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-name.none": { + "baseline": "high", + "baseline_high_date": "2018-03-30", + "baseline_low_date": "2015-09-30", + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-play-state": { + "baseline": "high", + "baseline_high_date": "2018-03-30", + "baseline_low_date": "2015-09-30", + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-play-state.paused": { + "baseline": "high", + "baseline_high_date": "2018-03-30", + "baseline_low_date": "2015-09-30", + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-play-state.running": { + "baseline": "high", + "baseline_high_date": "2018-03-30", + "baseline_low_date": "2015-09-30", + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-timing-function": { + "baseline": "high", + "baseline_high_date": "2018-03-30", + "baseline_low_date": "2015-09-30", + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + }, + "css.properties.animation-timing-function.jump": { + "baseline": "high", + "baseline_high_date": "2023-03-16", + "baseline_low_date": "2020-09-16", + "support": { + "chrome": "77", + "chrome_android": "77", + "edge": "79", + "firefox": "65", + "firefox_android": "65", + "safari": "14", + "safari_ios": "14" + } + }, + "css.types.time": { + "baseline": "high", + "baseline_high_date": "2018-01-29", + "baseline_low_date": "2015-07-29", + "support": { + "chrome": "1", + "chrome_android": "18", + "edge": "12", + "firefox": "4", + "firefox_android": "4", + "safari": "3.1", + "safari_ios": "2" + } + } + }, + "support": { + "chrome": "43", + "chrome_android": "43", + "edge": "12", + "firefox": "16", + "firefox_android": "16", + "safari": "9", + "safari_ios": "9" + } + } + }, + "appearance": { + "compat_features": [ + "css.properties.appearance", + "css.properties.appearance.auto", + "css.properties.appearance.button", + "css.properties.appearance.checkbox", + "css.properties.appearance.listbox", + "css.properties.appearance.menulist", + "css.properties.appearance.menulist-button", + "css.properties.appearance.meter", + "css.properties.appearance.none", + "css.properties.appearance.progress-bar", + "css.properties.appearance.radio", + "css.properties.appearance.searchfield", + "css.properties.appearance.textarea", + "css.properties.appearance.textfield" + ], + "description": "The appearance CSS property controls the appearance of form controls. Using appearance: none disables any default native appearance and allows the elements to be styled with CSS.", + "description_html": "The appearance CSS property controls the appearance of form controls. Using appearance: none disables any default native appearance and allows the elements to be styled with CSS.", + "group": "css", + "name": "appearance", + "spec": "https://drafts.csswg.org/css-ui-4/#appearance-switching", + "status": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "by_compat_key": { + "css.properties.appearance": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + }, + "css.properties.appearance.auto": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + }, + "css.properties.appearance.button": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + }, + "css.properties.appearance.checkbox": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + }, + "css.properties.appearance.listbox": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + }, + "css.properties.appearance.menulist": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + }, + "css.properties.appearance.menulist-button": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + }, + "css.properties.appearance.meter": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + }, + "css.properties.appearance.none": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + }, + "css.properties.appearance.progress-bar": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + }, + "css.properties.appearance.radio": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + }, + "css.properties.appearance.searchfield": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + }, + "css.properties.appearance.textarea": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + }, + "css.properties.appearance.textfield": { + "baseline": "high", + "baseline_high_date": "2024-09-14", + "baseline_low_date": "2022-03-14", + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + } + }, + "support": { + "chrome": "84", + "chrome_android": "84", + "edge": "84", + "firefox": "80", + "firefox_android": "80", + "safari": "15.4", + "safari_ios": "15.4" + } + } + }, + "aria-attribute-reflection": { + "compat_features": [ + "api.Element.ariaActiveDescendantElement", + "api.Element.ariaAtomic", + "api.Element.ariaAutoComplete", + "api.Element.ariaBrailleLabel", + "api.Element.ariaBrailleRoleDescription", + "api.Element.ariaBusy", + "api.Element.ariaChecked", + "api.Element.ariaColCount", + "api.Element.ariaColIndex", + "api.Element.ariaColIndexText", + "api.Element.ariaColSpan", + "api.Element.ariaControlsElements", + "api.Element.ariaCurrent", + "api.Element.ariaDescribedByElements", + "api.Element.ariaDescription", + "api.Element.ariaDetailsElements", + "api.Element.ariaDisabled", + "api.Element.ariaErrorMessageElements", + "api.Element.ariaExpanded", + "api.Element.ariaFlowToElements", + "api.Element.ariaHasPopup", + "api.Element.ariaHidden", + "api.Element.ariaInvalid", + "api.Element.ariaKeyShortcuts", + "api.Element.ariaLabel", + "api.Element.ariaLabelledByElements", + "api.Element.ariaLevel", + "api.Element.ariaLive", + "api.Element.ariaModal", + "api.Element.ariaMultiLine", + "api.Element.ariaMultiSelectable", + "api.Element.ariaOrientation", + "api.Element.ariaOwnsElements", + "api.Element.ariaPlaceholder", + "api.Element.ariaPosInSet", + "api.Element.ariaPressed", + "api.Element.ariaReadOnly", + "api.Element.ariaRelevant", + "api.Element.ariaRequired", + "api.Element.ariaRoleDescription", + "api.Element.ariaRowCount", + "api.Element.ariaRowIndex", + "api.Element.ariaRowIndexText", + "api.Element.ariaRowSpan", + "api.Element.ariaSelected", + "api.Element.ariaSetSize", + "api.Element.ariaSort", + "api.Element.ariaValueMax", + "api.Element.ariaValueMin", + "api.Element.ariaValueNow", + "api.Element.ariaValueText", + "api.Element.role", + "api.ElementInternals.ariaActiveDescendantElement", + "api.ElementInternals.ariaAtomic", + "api.ElementInternals.ariaAutoComplete", + "api.ElementInternals.ariaBrailleLabel", + "api.ElementInternals.ariaBrailleRoleDescription", + "api.ElementInternals.ariaBusy", + "api.ElementInternals.ariaChecked", + "api.ElementInternals.ariaColCount", + "api.ElementInternals.ariaColIndex", + "api.ElementInternals.ariaColIndexText", + "api.ElementInternals.ariaColSpan", + "api.ElementInternals.ariaControlsElements", + "api.ElementInternals.ariaCurrent", + "api.ElementInternals.ariaDescribedByElements", + "api.ElementInternals.ariaDescription", + "api.ElementInternals.ariaDetailsElements", + "api.ElementInternals.ariaDisabled", + "api.ElementInternals.ariaErrorMessageElements", + "api.ElementInternals.ariaExpanded", + "api.ElementInternals.ariaFlowToElements", + "api.ElementInternals.ariaHasPopup", + "api.ElementInternals.ariaHidden", + "api.ElementInternals.ariaInvalid", + "api.ElementInternals.ariaKeyShortcuts", + "api.ElementInternals.ariaLabel", + "api.ElementInternals.ariaLabelledByElements", + "api.ElementInternals.ariaLevel", + "api.ElementInternals.ariaLive", + "api.ElementInternals.ariaModal", + "api.ElementInternals.ariaMultiLine", + "api.ElementInternals.ariaMultiSelectable", + "api.ElementInternals.ariaOrientation", + "api.ElementInternals.ariaOwnsElements", + "api.ElementInternals.ariaPlaceholder", + "api.ElementInternals.ariaPosInSet", + "api.ElementInternals.ariaPressed", + "api.ElementInternals.ariaReadOnly", + "api.ElementInternals.ariaRequired", + "api.ElementInternals.ariaRoleDescription", + "api.ElementInternals.ariaRowCount", + "api.ElementInternals.ariaRowIndex", + "api.ElementInternals.ariaRowIndexText", + "api.ElementInternals.ariaRowSpan", + "api.ElementInternals.ariaSelected", + "api.ElementInternals.ariaSetSize", + "api.ElementInternals.ariaSort", + "api.ElementInternals.ariaValueMax", + "api.ElementInternals.ariaValueMin", + "api.ElementInternals.ariaValueNow", + "api.ElementInternals.ariaValueText", + "api.ElementInternals.role" + ], + "description": "WAI-ARIA attributes have corresponding properties on Element and ElementInternals objects.", + "description_html": "WAI-ARIA attributes have corresponding properties on Element and ElementInternals objects.", + "name": "ARIA attribute reflection", + "spec": "https://w3c.github.io/aria/#accessibilityroleandproperties-correspondence", + "status": { + "baseline": "low", + "baseline_low_date": "2023-10-24", + "by_compat_key": { + "api.Element.ariaActiveDescendantElement": { + "baseline": false, + "support": { + "safari": "16.4", + "safari_ios": "16.4" + } + }, + "api.Element.ariaAtomic": { + "baseline": "low", + "baseline_low_date": "2023-10-24", + "support": { + "chrome": "81", + "chrome_android": "81", + "edge": "81", + "firefox": "119", + "firefox_android": "119", + "safari": "12.1", + "safari_ios": "12.2" + } + }, + "api.Element.ariaAutoComplete": { + "baseline": "low", + "baseline_low_date": "2023-10-24", + "support": { + "chrome": "81", + "chrome_android": "81", + "edge": "81", + "firefox": "119", + "firefox_android": "119", + "safari": "12.1", + "safari_ios": "12.2" + } + }, + "api.Element.ariaBrailleLabel": { + "baseline": "low", + "baseline_low_date": "2024-09-16", + "support": { + "chrome": "107", + "chrome_android": "107", + "edge": "107", + "firefox": "125", + "firefox_android": "125", + "safari": "18", + "safari_ios": "18" + } + }, + "api.Element.ariaBrailleRoleDescription": { + "baseline": "low", + "baseline_low_date": "2024-09-16", + "support": { + "chrome": "107", + "chrome_android": "107", + "edge": "107", + "firefox": "125", + "firefox_android": "125", + "safari": "18", + "safari_ios": "18" + } + }, + "api.Element.ariaBusy": { + "baseline": "low", + "baseline_low_date": "2023-10-24", + "support": { + "chrome": "81", + "chrome_android": "81", + "edge": "81", + "firefox": "119", + "firefox_android": "119", + "safari": "12.1", + "safari_ios": "12.2" + } + }, + "api.Element.ariaChecked": { + "baseline": "low", + "baseline_low_date": "2023-10-24", + "support": { + "chrome": "81", + "chrome_android": "81", + "edge": "81", + "firefox": "119", + "firefox_android": "119", + "safari": "12.1", + "safari_ios": "12.2" + } + }, + "api.Element.ariaColCount": { + "baseline": "low", + "baseline_low_date": "2023-10-24", + "support": { + "chrome": "81", + "chrome_android": "81", + "edge": "81", + "firefox": "119", + "firefox_android": "119", + "safari": "12.1", + "safari_ios": "12.2" + } + }, + "api.Element.ariaColIndex": { + "baseline": "low", + "baseline_low_date": "2023-10-24", + "support": { + "chrome": "81", + "chrome_android": "81", + "edge": "81", + "firefox": "119", + "firefox_android": "119", + "safari": "12.1", + "safari_ios": "12.2" + } + }, + "api.Element.ariaColIndexText": { + "baseline": false, + "support": { + "chrome": "128", + "chrome_android": "128", + "edge": "128", + "firefox": "119", + "firefox_android": "119" + } + }, + "api.Element.ariaColSpan": { + "baseline": "low", + "baseline_low_date": "2023-10-24", + "support": { + "chrome": "81", + "chrome_android": "81", + "edge": "81", + "firefox": "119", + "firefox_android": "119", + "safari": "12.1", + "safari_ios": "12.2" + } + }, + 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