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at-rules.json
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Sat, Jan 11, 09:47

at-rules.json
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{
"@charset": {
"syntax": "@charset \"<charset>\";",
"groups": [
"CSS Charsets"
],
"status": "standard",
"mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@charset"
},
"@counter-style": {
"syntax": "@counter-style <counter-style-name> {\n [ system: <counter-system>; ] ||\n [ symbols: <counter-symbols>; ] ||\n [ additive-symbols: <additive-symbols>; ] ||\n [ negative: <negative-symbol>; ] ||\n [ prefix: <prefix>; ] ||\n [ suffix: <suffix>; ] ||\n [ range: <range>; ] ||\n [ pad: <padding>; ] ||\n [ speak-as: <speak-as>; ] ||\n [ fallback: <counter-style-name>; ]\n}",
"interfaces": [
"CSSCounterStyleRule"
],
"groups": [
"CSS Counter Styles"
],
"descriptors": {
"additive-symbols": {
"syntax": "[ <integer> && <symbol> ]#",
"media": "all",
"initial": "n/a (required)",
"percentages": "no",
"computed": "asSpecified",
"order": "orderOfAppearance",
"status": "standard"
},
"fallback": {
"syntax": "<counter-style-name>",
"media": "all",
"initial": "decimal",
"percentages": "no",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
},
"negative": {
"syntax": "<symbol> <symbol>?",
"media": "all",
"initial": "\"-\" hyphen-minus",
"percentages": "no",
"computed": "asSpecified",
"order": "orderOfAppearance",
"status": "standard"
},
"pad": {
"syntax": "<integer> && <symbol>",
"media": "all",
"initial": "0 \"\"",
"percentages": "no",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
},
"prefix": {
"syntax": "<symbol>",
"media": "all",
"initial": "\"\"",
"percentages": "no",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
},
"range": {
"syntax": "[ [ <integer> | infinite ]{2} ]# | auto",
"media": "all",
"initial": "auto",
"percentages": "no",
"computed": "asSpecified",
"order": "orderOfAppearance",
"status": "standard"
},
"speak-as": {
"syntax": "auto | bullets | numbers | words | spell-out | <counter-style-name>",
"media": "all",
"initial": "auto",
"percentages": "no",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
},
"suffix": {
"syntax": "<symbol>",
"media": "all",
"initial": "\". \"",
"percentages": "no",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
},
"symbols": {
"syntax": "<symbol>+",
"media": "all",
"initial": "n/a (required)",
"percentages": "no",
"computed": "asSpecified",
"order": "orderOfAppearance",
"status": "standard"
},
"system": {
"syntax": "cyclic | numeric | alphabetic | symbolic | additive | [ fixed <integer>? ] | [ extends <counter-style-name> ]",
"media": "all",
"initial": "symbolic",
"percentages": "no",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
}
},
"status": "standard",
"mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@counter-style"
},
"@document": {
"syntax": "@document [ <url> | url-prefix(<string>) | domain(<string>) | media-document(<string>) | regexp(<string>) ]# {\n <group-rule-body>\n}",
"interfaces": [
"CSSGroupingRule",
"CSSConditionRule"
],
"groups": [
"CSS Conditional Rules"
],
"status": "nonstandard",
"mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@document"
},
"@font-face": {
"syntax": "@font-face {\n [ font-family: <family-name>; ] ||\n [ src: <src>; ] ||\n [ unicode-range: <unicode-range>; ] ||\n [ font-variant: <font-variant>; ] ||\n [ font-feature-settings: <font-feature-settings>; ] ||\n [ font-variation-settings: <font-variation-settings>; ] ||\n [ font-stretch: <font-stretch>; ] ||\n [ font-weight: <font-weight>; ] ||\n [ font-style: <font-style>; ]\n}",
"interfaces": [
"CSSFontFaceRule"
],
"groups": [
"CSS Fonts"
],
"descriptors": {
"font-display": {
"syntax": "[ auto | block | swap | fallback | optional ]",
"media": "visual",
"percentages": "no",
"initial": "auto",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "experimental"
},
"font-family": {
"syntax": "<family-name>",
"media": "all",
"initial": "n/a (required)",
"percentages": "no",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
},
"font-feature-settings": {
"syntax": "normal | <feature-tag-value>#",
"media": "all",
"initial": "normal",
"percentages": "no",
"computed": "asSpecified",
"order": "orderOfAppearance",
"status": "standard"
},
"font-variation-settings": {
"syntax": "normal | [ <string> <number> ]#",
"media": "all",
"initial": "normal",
"percentages": "no",
"computed": "asSpecified",
"order": "orderOfAppearance",
"status": "standard"
},
"font-stretch": {
"syntax": "<font-stretch-absolute>{1,2}",
"media": "all",
"initial": "normal",
"percentages": "no",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
},
"font-style": {
"syntax": "normal | italic | oblique <angle>{0,2}",
"media": "all",
"initial": "normal",
"percentages": "no",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
},
"font-weight": {
"syntax": "<font-weight-absolute>{1,2}",
"media": "all",
"initial": "normal",
"percentages": "no",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
},
"font-variant": {
"syntax": "normal | none | [ <common-lig-values> || <discretionary-lig-values> || <historical-lig-values> || <contextual-alt-values> || stylistic(<feature-value-name>) || historical-forms || styleset(<feature-value-name>#) || character-variant(<feature-value-name>#) || swash(<feature-value-name>) || ornaments(<feature-value-name>) || annotation(<feature-value-name>) || [ small-caps | all-small-caps | petite-caps | all-petite-caps | unicase | titling-caps ] || <numeric-figure-values> || <numeric-spacing-values> || <numeric-fraction-values> || ordinal || slashed-zero || <east-asian-variant-values> || <east-asian-width-values> || ruby ]",
"media": "all",
"initial": "normal",
"percentages": "no",
"computed": "asSpecified",
"order": "orderOfAppearance",
"status": "standard"
},
"src": {
"syntax": "[ <url> [ format( <string># ) ]? | local( <family-name> ) ]#",
"media": "all",
"initial": "n/a (required)",
"percentages": "no",
"computed": "asSpecified",
"order": "orderOfAppearance",
"status": "standard"
},
"unicode-range": {
"syntax": "<unicode-range>#",
"media": "all",
"initial": "U+0-10FFFF",
"percentages": "no",
"computed": "asSpecified",
"order": "orderOfAppearance",
"status": "standard"
}
},
"status": "standard",
"mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@font-face"
},
"@font-feature-values": {
"syntax": "@font-feature-values <family-name># {\n <feature-value-block-list>\n}",
"interfaces": [
"CSSFontFeatureValuesRule"
],
"groups": [
"CSS Fonts"
],
"status": "standard",
"mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@font-feature-values"
},
"@import": {
"syntax": "@import [ <string> | <url> ] [ <media-query-list> ]?;",
"groups": [
"Media Queries"
],
"status": "standard",
"mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@import"
},
"@keyframes": {
"syntax": "@keyframes <keyframes-name> {\n <keyframe-block-list>\n}",
"interfaces": [
"CSSKeyframeRule",
"CSSKeyframesRule"
],
"groups": [
"CSS Animations"
],
"status": "standard",
"mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@keyframes"
},
"@media": {
"syntax": "@media <media-query-list> {\n <group-rule-body>\n}",
"interfaces": [
"CSSGroupingRule",
"CSSConditionRule",
"CSSMediaRule",
"CSSCustomMediaRule"
],
"groups": [
"CSS Conditional Rules",
"Media Queries"
],
"status": "standard",
"mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@media"
},
"@namespace": {
"syntax": "@namespace <namespace-prefix>? [ <string> | <url> ];",
"groups": [
"CSS Namespaces"
],
"status": "standard",
"mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@namespace"
},
"@page": {
"syntax": "@page <page-selector-list> {\n <page-body>\n}",
"interfaces": [
"CSSPageRule"
],
"groups": [
"CSS Pages"
],
"descriptors": {
"bleed": {
"syntax": "auto | <length>",
"media": [
"visual",
"paged"
],
"initial": "auto",
"percentages": "no",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
},
"marks": {
"syntax": "none | [ crop || cross ]",
"media": [
"visual",
"paged"
],
"initial": "none",
"percentages": "no",
"computed": "asSpecified",
"order": "orderOfAppearance",
"status": "standard"
},
"size": {
"syntax": "<length>{1,2} | auto | [ <page-size> || [ portrait | landscape ] ]",
"media": [
"visual",
"paged"
],
"initial": "auto",
"percentages": "no",
"computed": "asSpecifiedRelativeToAbsoluteLengths",
"order": "orderOfAppearance",
"status": "standard"
}
},
"status": "standard",
"mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@page"
},
"@property": {
"syntax": "@property <custom-property-name> {\n <declaration-list>\n}",
"interfaces": [
"CSS",
"CSSPropertyRule"
],
"groups": [
"CSS Houdini"
],
"descriptors": {
"syntax": {
"syntax": "<string>",
"media": "all",
"percentages": "no",
"initial": "n/a (required)",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "experimental"
},
"inherits": {
"syntax": "true | false",
"media": "all",
"percentages": "no",
"initial": "auto",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "experimental"
},
"initial-value": {
"syntax": "<string>",
"media": "all",
"initial": "n/a (required)",
"percentages": "no",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "experimental"
}
},
"status": "experimental",
"mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@property"
},
"@supports": {
"syntax": "@supports <supports-condition> {\n <group-rule-body>\n}",
"interfaces": [
"CSSGroupingRule",
"CSSConditionRule",
"CSSSupportsRule"
],
"groups": [
"CSS Conditional Rules"
],
"status": "standard",
"mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@supports"
},
"@viewport": {
"syntax": "@viewport {\n <group-rule-body>\n}",
"interfaces": [
"CSSViewportRule"
],
"groups": [
"CSS Device Adaptation"
],
"descriptors": {
"height": {
"syntax": "<viewport-length>{1,2}",
"media": [
"visual",
"continuous"
],
"initial": [
"min-height",
"max-height"
],
"percentages": [
"min-height",
"max-height"
],
"computed": [
"min-height",
"max-height"
],
"order": "orderOfAppearance",
"status": "standard"
},
"max-height": {
"syntax": "<viewport-length>",
"media": [
"visual",
"continuous"
],
"initial": "auto",
"percentages": "referToHeightOfInitialViewport",
"computed": "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto",
"order": "uniqueOrder",
"status": "standard"
},
"max-width": {
"syntax": "<viewport-length>",
"media": [
"visual",
"continuous"
],
"initial": "auto",
"percentages": "referToWidthOfInitialViewport",
"computed": "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto",
"order": "uniqueOrder",
"status": "standard"
},
"max-zoom": {
"syntax": "auto | <number> | <percentage>",
"media": [
"visual",
"continuous"
],
"initial": "auto",
"percentages": "the zoom factor itself",
"computed": "autoNonNegativeOrPercentage",
"order": "uniqueOrder",
"status": "standard"
},
"min-height": {
"syntax": "<viewport-length>",
"media": [
"visual",
"continuous"
],
"initial": "auto",
"percentages": "referToHeightOfInitialViewport",
"computed": "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto",
"order": "uniqueOrder",
"status": "standard"
},
"min-width": {
"syntax": "<viewport-length>",
"media": [
"visual",
"continuous"
],
"initial": "auto",
"percentages": "referToWidthOfInitialViewport",
"computed": "lengthAbsolutePercentageAsSpecifiedOtherwiseAuto",
"order": "uniqueOrder",
"status": "standard"
},
"min-zoom": {
"syntax": "auto | <number> | <percentage>",
"media": [
"visual",
"continuous"
],
"initial": "auto",
"percentages": "the zoom factor itself",
"computed": "autoNonNegativeOrPercentage",
"order": "uniqueOrder",
"status": "standard"
},
"orientation": {
"syntax": "auto | portrait | landscape",
"media": [
"visual",
"continuous"
],
"initial": "auto",
"percentages": "referToSizeOfBoundingBox",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
},
"user-zoom": {
"syntax": "zoom | fixed",
"media": [
"visual",
"continuous"
],
"initial": "zoom",
"percentages": "referToSizeOfBoundingBox",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
},
"viewport-fit": {
"syntax": "auto | contain | cover",
"media": [
"visual",
"continuous"
],
"initial": "auto",
"percentages": "no",
"computed": "asSpecified",
"order": "uniqueOrder",
"status": "standard"
},
"width": {
"syntax": "<viewport-length>{1,2}",
"media": [
"visual",
"continuous"
],
"initial": [
"min-width",
"max-width"
],
"percentages": [
"min-width",
"max-width"
],
"computed": [
"min-width",
"max-width"
],
"order": "orderOfAppearance",
"status": "standard"
},
"zoom": {
"syntax": "auto | <number> | <percentage>",
"media": [
"visual",
"continuous"
],
"initial": "auto",
"percentages": "the zoom factor itself",
"computed": "autoNonNegativeOrPercentage",
"order": "uniqueOrder",
"status": "standard"
}
},
"status": "standard",
"mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@viewport"
}
}

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