{
 "compat_features": [
  "css.at-rules.supports.at-rule"
 ],
 "description": "The at-rule() function, when used with @supports, checks if a CSS at-rule is supported. For example @supports at-rule(@starting-style) checks if the @starting-style at-rule is supported.",
 "description_html": "The <code>at-rule()</code> function, when used with <code>@supports</code>, checks if a CSS at-rule is supported. For example <code>@supports at-rule(@starting-style)</code> checks if the <code>@starting-style</code> at-rule is supported.",
 "group": [
  "css"
 ],
 "kind": "feature",
 "name": "at-rule()",
 "spec": [
  "https://drafts.csswg.org/css-conditional-5/#typedef-supports-at-rule-fn"
 ],
 "status": {
  "baseline": false,
  "by_compat_key": {
   "css.at-rules.supports.at-rule": {
    "baseline": false,
    "support": {
     "chrome": "148",
     "chrome_android": "148",
     "edge": "148"
    }
   }
  },
  "support": {
   "chrome": "148",
   "chrome_android": "148",
   "edge": "148"
  }
 },
 "id": "supports-at-rule",
 "groups": [
  "css"
 ],
 "specs": [
  {
   "url": "https://drafts.csswg.org/css-conditional-5/#typedef-supports-at-rule-fn",
   "seriesComposition": "delta",
   "shortname": "css-conditional-5",
   "series": {
    "shortname": "css-conditional",
    "currentSpecification": "css-conditional-3",
    "title": "CSS Conditional Rules",
    "shortTitle": "CSS Conditional",
    "releaseUrl": "https://www.w3.org/TR/css-conditional/",
    "nightlyUrl": "https://drafts.csswg.org/css-conditional/"
   },
   "seriesVersion": "5",
   "shortTitle": "CSS Conditional 5",
   "seriesPrevious": "css-conditional-4",
   "organization": "W3C",
   "groups": [
    {
     "name": "Cascading Style Sheets (CSS) Working Group",
     "url": "https://www.w3.org/groups/wg/css/"
    }
   ],
   "release": {
    "url": "https://www.w3.org/TR/css-conditional-5/",
    "status": "Working Draft",
    "filename": "Overview.html"
   },
   "nightly": {
    "url": "https://drafts.csswg.org/css-conditional-5/",
    "status": "Editor's Draft",
    "alternateUrls": [
     "https://w3c.github.io/csswg-drafts/css-conditional-5/"
    ],
    "repository": "https://github.com/w3c/csswg-drafts",
    "sourcePath": "css-conditional-5/Overview.bs",
    "filename": "index.html"
   },
   "title": "CSS Conditional Rules Module Level 5",
   "source": "w3c",
   "categories": [
    "browser"
   ],
   "standing": "good",
   "tests": {
    "repository": "https://github.com/web-platform-tests/wpt",
    "testPaths": [
     "css/css-conditional"
    ]
   },
   "fragment": "typedef-supports-at-rule-fn"
  }
 ],
 "mdnUrls": [],
 "standardPositions": [
  {
   "vendor": "mozilla",
   "url": "https://github.com/mozilla/standards-positions/issues/1310",
   "position": "",
   "concerns": []
  },
  {
   "vendor": "apple",
   "url": "https://github.com/WebKit/standards-positions/issues/565",
   "position": "support",
   "concerns": []
  }
 ],
 "hasNegativeStandardPosition": false,
 "stateOfSurveys": [],
 "chromeUseCounters": {},
 "interop": [],
 "wpt": {
  "url": "https://wpt.fyi/results?q=feature:supports-at-rule"
 },
 "developerSignals": {
  "url": "https://github.com/web-platform-dx/developer-signals/issues/447",
  "votes": 16
 },
 "bugs": {
  "firefox": [
   "https://bugzil.la/1751188"
  ],
  "chrome": [
   "https://issues.chromium.org/issues/40211832"
  ],
  "firefox_android": [
   "https://bugzil.la/1751188"
  ]
 },
 "useCases": null,
 "baselineLowDateAsObject": null,
 "baselineHighDateAsObject": null
}