{
 "caniuse": [
  "css-containment"
 ],
 "compat_features": [
  "css.properties.contain",
  "css.properties.contain.content",
  "css.properties.contain.none",
  "css.properties.contain.strict"
 ],
 "description": "The contain CSS property sets limits to the scope of styles, layout, and paint rendering for speed and efficiency. The none keyword value disables containment, strict is equivalent to contain: size layout style paint, and content is equivalent to contain: layout style paint.",
 "description_html": "The <code>contain</code> CSS property sets limits to the scope of styles, layout, and paint rendering for speed and efficiency. The <code>none</code> keyword value disables containment, <code>strict</code> is equivalent to <code>contain: size layout style paint</code>, and <code>content</code> is equivalent to <code>contain: layout style paint</code>.",
 "group": [
  "containment"
 ],
 "kind": "feature",
 "name": "contain",
 "spec": [
  "https://drafts.csswg.org/css-contain-2/#contain-property"
 ],
 "status": {
  "baseline": "high",
  "baseline_high_date": "2024-09-14",
  "baseline_low_date": "2022-03-14",
  "by_compat_key": {
   "css.properties.contain": {
    "baseline": "high",
    "baseline_high_date": "2024-09-14",
    "baseline_low_date": "2022-03-14",
    "support": {
     "chrome": "52",
     "chrome_android": "52",
     "edge": "79",
     "firefox": "69",
     "firefox_android": "79",
     "safari": "15.4",
     "safari_ios": "15.4"
    }
   },
   "css.properties.contain.content": {
    "baseline": "high",
    "baseline_high_date": "2024-09-14",
    "baseline_low_date": "2022-03-14",
    "support": {
     "chrome": "52",
     "chrome_android": "52",
     "edge": "79",
     "firefox": "69",
     "firefox_android": "79",
     "safari": "15.4",
     "safari_ios": "15.4"
    }
   },
   "css.properties.contain.none": {
    "baseline": "high",
    "baseline_high_date": "2024-09-14",
    "baseline_low_date": "2022-03-14",
    "support": {
     "chrome": "52",
     "chrome_android": "52",
     "edge": "79",
     "firefox": "69",
     "firefox_android": "79",
     "safari": "15.4",
     "safari_ios": "15.4"
    }
   },
   "css.properties.contain.strict": {
    "baseline": "high",
    "baseline_high_date": "2024-09-14",
    "baseline_low_date": "2022-03-14",
    "support": {
     "chrome": "52",
     "chrome_android": "52",
     "edge": "79",
     "firefox": "69",
     "firefox_android": "79",
     "safari": "15.4",
     "safari_ios": "15.4"
    }
   }
  },
  "support": {
   "chrome": "52",
   "chrome_android": "52",
   "edge": "79",
   "firefox": "69",
   "firefox_android": "79",
   "safari": "15.4",
   "safari_ios": "15.4"
  }
 },
 "id": "contain",
 "groups": [
  "containment"
 ],
 "specs": [
  {
   "url": "https://drafts.csswg.org/css-contain-2/#contain-property",
   "seriesComposition": "full",
   "shortname": "css-contain-2",
   "series": {
    "shortname": "css-contain",
    "currentSpecification": "css-contain-2",
    "title": "CSS Containment",
    "shortTitle": "CSS Containment",
    "releaseUrl": "https://www.w3.org/TR/css-contain/",
    "nightlyUrl": "https://drafts.csswg.org/css-contain/"
   },
   "seriesVersion": "2",
   "seriesPrevious": "css-contain-1",
   "seriesNext": "css-contain-3",
   "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-contain-2/",
    "status": "Working Draft",
    "filename": "Overview.html"
   },
   "nightly": {
    "url": "https://drafts.csswg.org/css-contain-2/",
    "status": "Editor's Draft",
    "alternateUrls": [
     "https://w3c.github.io/csswg-drafts/css-contain-2/",
     "https://w3c.github.io/csswg-drafts/css-contain/"
    ],
    "repository": "https://github.com/w3c/csswg-drafts",
    "sourcePath": "css-contain-2/Overview.bs",
    "filename": "index.html"
   },
   "title": "CSS Containment Module Level 2",
   "source": "w3c",
   "shortTitle": "CSS Containment 2",
   "categories": [
    "browser"
   ],
   "standing": "good",
   "tests": {
    "repository": "https://github.com/web-platform-tests/wpt",
    "testPaths": [
     "css/css-contain"
    ]
   },
   "fragment": "contain-property"
  }
 ],
 "mdnUrls": [
  {
   "slug": "Web/CSS/Reference/Properties/contain",
   "title": "`contain` CSS property",
   "anchor": null,
   "url": "https://developer.mozilla.org/docs/Web/CSS/Reference/Properties/contain"
  }
 ],
 "standardPositions": [],
 "hasNegativeStandardPosition": false,
 "stateOfSurveys": [],
 "chromeUseCounters": {},
 "interop": [
  {
   "year": 2022,
   "label": "interop-2022-contain",
   "url": "https://wpt.fyi/interop-2022?feature=interop-2022-contain"
  },
  {
   "year": 2023,
   "label": "interop-2023-contain",
   "url": "https://wpt.fyi/interop-2023?feature=interop-2023-contain"
  }
 ],
 "wpt": {
  "url": "https://wpt.fyi/results?q=feature:contain"
 },
 "developerSignals": null,
 "bugs": {},
 "baselineLowDateAsObject": "2022-03-14T00:00:00.000Z",
 "baselineHighDateAsObject": "2024-09-14T00:00:00.000Z"
}