app/frontend/node_modules/mdn-data/css/at-rules.json

{
  "@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  [ size-adjust: <size-adjust>; ] ||\n  [ ascent-override: <ascent-override>; ] ||\n  [ descent-override: <descent-override>; ] ||\n  [ line-gap-override: <line-gap-override>; ]\n}",
    "interfaces": [
      "CSSFontFaceRule"
    ],
    "groups": [
      "CSS Fonts"
    ],
    "descriptors": {
      "ascent-override": {
        "syntax": "normal | <percentage>",
        "media": "all",
        "initial": "normal",
        "percentages": "asSpecified",
        "computed": "asSpecified",
        "order": "orderOfAppearance",
        "status": "experimental"
      },
      "descent-override": {
        "syntax": "normal | <percentage>",
        "media": "all",
        "initial": "normal",
        "percentages": "asSpecified",
        "computed": "asSpecified",
        "order": "orderOfAppearance",
        "status": "experimental"
      },
      "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"
      },
      "line-gap-override": {
        "syntax": "normal | <percentage>",
        "media": "all",
        "initial": "normal",
        "percentages": "asSpecified",
        "computed": "asSpecified",
        "order": "orderOfAppearance",
        "status": "experimental"
      },
      "size-adjust": {
        "syntax": "<percentage>",
        "media": "all",
        "initial": "100%",
        "percentages": "asSpecified",
        "computed": "asSpecified",
        "order": "orderOfAppearance",
        "status": "experimental"
      },
      "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> ]\n        [ layer | layer(<layer-name>) ]?\n        [ supports( [ <supports-condition> | <declaration> ] ) ]?\n        <media-query-list>? ;",
    "groups": [
      "CSS Conditional Rules",
      "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"
  },
  "@layer": {
    "syntax": "@layer [ <layer-name># | <layer-name>?  {\n  <stylesheet>\n} ]",
    "interfaces": [
      "CSSLayerBlockRule",
      "CSSLayerStatementRule"
    ],
    "groups": [
      "CSS Cascading and Inheritance"
    ],
    "status": "standard",
    "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@layer"
  },
  "@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"
  },
  "@scroll-timeline": {
    "syntax": "@scroll-timeline <timeline-name> { <declaration-list> }",
    "interfaces": [
      "ScrollTimeline"
    ],
    "groups": [
      "CSS Animations"
    ],
    "status": "standard",
    "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@scroll-timeline"
  },
  "@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"
  }
}