{
 "compat_features": [
  "api.CSS",
  "api.CSSConditionRule",
  "api.CSSConditionRule.conditionText",
  "api.CSSGroupingRule",
  "api.CSSGroupingRule.cssRules",
  "api.CSSGroupingRule.deleteRule",
  "api.CSSGroupingRule.insertRule",
  "api.CSSMarginRule",
  "api.CSSMarginRule.name",
  "api.CSSMarginRule.style",
  "api.CSSMediaRule",
  "api.CSSMediaRule.media",
  "api.CSSPageDescriptors",
  "api.CSSPageDescriptors.margin",
  "api.CSSPageDescriptors.margin-bottom",
  "api.CSSPageDescriptors.margin-left",
  "api.CSSPageDescriptors.margin-right",
  "api.CSSPageDescriptors.margin-top",
  "api.CSSPageDescriptors.marginBottom",
  "api.CSSPageDescriptors.marginLeft",
  "api.CSSPageDescriptors.marginRight",
  "api.CSSPageDescriptors.marginTop",
  "api.CSSPageDescriptors.page-orientation",
  "api.CSSPageDescriptors.pageOrientation",
  "api.CSSPageDescriptors.size",
  "api.CSSPageRule",
  "api.CSSPageRule.selectorText",
  "api.CSSPageRule.style",
  "api.CSSPageRule.style.type_CSSPageDescriptors",
  "api.CSSPseudoElement",
  "api.CSSPseudoElement.element",
  "api.CSSPseudoElement.type",
  "api.CSSRule",
  "api.CSSRule.cssText",
  "api.CSSRule.parentRule",
  "api.CSSRule.parentStyleSheet",
  "api.CSSRuleList",
  "api.CSSRuleList.item",
  "api.CSSRuleList.length",
  "api.CSSStyleDeclaration",
  "api.CSSStyleDeclaration.@@iterator",
  "api.CSSStyleDeclaration.cssText",
  "api.CSSStyleDeclaration.getPropertyPriority",
  "api.CSSStyleDeclaration.getPropertyValue",
  "api.CSSStyleDeclaration.item",
  "api.CSSStyleDeclaration.length",
  "api.CSSStyleDeclaration.parentRule",
  "api.CSSStyleDeclaration.removeProperty",
  "api.CSSStyleDeclaration.setProperty",
  "api.CSSStyleRule",
  "api.CSSStyleRule.selectorText",
  "api.CSSStyleRule.style",
  "api.CSSStyleSheet",
  "api.CSSStyleSheet.cssRules",
  "api.CSSStyleSheet.deleteRule",
  "api.CSSStyleSheet.insertRule",
  "api.CSSStyleSheet.insertRule.index_parameter_optional",
  "api.CSSStyleSheet.ownerRule",
  "api.Document.styleSheets",
  "api.HTMLElement.style",
  "api.HTMLLinkElement.sheet",
  "api.HTMLStyleElement.sheet",
  "api.MediaList",
  "api.MediaList.appendMedium",
  "api.MediaList.deleteMedium",
  "api.MediaList.item",
  "api.MediaList.length",
  "api.MediaList.mediaText",
  "api.MediaList.toString",
  "api.ProcessingInstruction.sheet",
  "api.ShadowRoot.styleSheets",
  "api.StyleSheet",
  "api.StyleSheet.disabled",
  "api.StyleSheet.href",
  "api.StyleSheet.media",
  "api.StyleSheet.ownerNode",
  "api.StyleSheet.parentStyleSheet",
  "api.StyleSheet.title",
  "api.StyleSheet.type",
  "api.StyleSheetList",
  "api.StyleSheetList.item",
  "api.StyleSheetList.length"
 ],
 "description": "The CSS object model API reads, creates, and modifies CSS stylesheets and inline styles. Also known as CSSOM.",
 "description_html": "The CSS object model API reads, creates, and modifies CSS stylesheets and inline styles. Also known as CSSOM.",
 "group": [
  "cssom"
 ],
 "kind": "feature",
 "name": "CSS object model",
 "spec": [
  "https://drafts.csswg.org/cssom-1/#css-object-model"
 ],
 "status": {
  "baseline": "high",
  "baseline_high_date": "2018-03-30",
  "baseline_low_date": "2015-09-30",
  "by_compat_key": {
   "api.CSS": {
    "baseline": "high",
    "baseline_high_date": "2018-03-30",
    "baseline_low_date": "2015-09-30",
    "support": {
     "chrome": "28",
     "chrome_android": "28",
     "edge": "12",
     "firefox": "22",
     "firefox_android": "22",
     "safari": "9",
     "safari_ios": "9"
    }
   },
   "api.CSSConditionRule": {
    "baseline": "high",
    "baseline_high_date": "2023-10-26",
    "baseline_low_date": "2021-04-26",
    "support": {
     "chrome": "56",
     "chrome_android": "56",
     "edge": "12",
     "firefox": "20",
     "firefox_android": "20",
     "safari": "14.1",
     "safari_ios": "14.5"
    }
   },
   "api.CSSConditionRule.conditionText": {
    "baseline": "high",
    "baseline_high_date": "2023-10-26",
    "baseline_low_date": "2021-04-26",
    "support": {
     "chrome": "56",
     "chrome_android": "56",
     "edge": "12",
     "firefox": "20",
     "firefox_android": "20",
     "safari": "14.1",
     "safari_ios": "14.5"
    }
   },
   "api.CSSGroupingRule": {
    "baseline": "high",
    "baseline_high_date": "2023-10-26",
    "baseline_low_date": "2021-04-26",
    "support": {
     "chrome": "45",
     "chrome_android": "45",
     "edge": "12",
     "firefox": "20",
     "firefox_android": "20",
     "safari": "14.1",
     "safari_ios": "14.5"
    }
   },
   "api.CSSGroupingRule.cssRules": {
    "baseline": "high",
    "baseline_high_date": "2023-10-26",
    "baseline_low_date": "2021-04-26",
    "support": {
     "chrome": "45",
     "chrome_android": "45",
     "edge": "12",
     "firefox": "20",
     "firefox_android": "20",
     "safari": "14.1",
     "safari_ios": "14.5"
    }
   },
   "api.CSSGroupingRule.deleteRule": {
    "baseline": "high",
    "baseline_high_date": "2023-10-26",
    "baseline_low_date": "2021-04-26",
    "support": {
     "chrome": "45",
     "chrome_android": "45",
     "edge": "12",
     "firefox": "20",
     "firefox_android": "20",
     "safari": "14.1",
     "safari_ios": "14.5"
    }
   },
   "api.CSSGroupingRule.insertRule": {
    "baseline": "high",
    "baseline_high_date": "2023-10-26",
    "baseline_low_date": "2021-04-26",
    "support": {
     "chrome": "45",
     "chrome_android": "45",
     "edge": "12",
     "firefox": "20",
     "firefox_android": "20",
     "safari": "14.1",
     "safari_ios": "14.5"
    }
   },
   "api.CSSMarginRule": {
    "baseline": false,
    "support": {
     "chrome": "131",
     "chrome_android": "131",
     "edge": "131"
    }
   },
   "api.CSSMarginRule.name": {
    "baseline": false,
    "support": {
     "chrome": "131",
     "chrome_android": "131",
     "edge": "131"
    }
   },
   "api.CSSMarginRule.style": {
    "baseline": false,
    "support": {
     "chrome": "131",
     "chrome_android": "131",
     "edge": "131"
    }
   },
   "api.CSSMediaRule": {
    "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": "3",
     "safari_ios": "1"
    }
   },
   "api.CSSMediaRule.media": {
    "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": "3",
     "safari_ios": "1"
    }
   },
   "api.CSSPageDescriptors": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129",
     "safari": "26",
     "safari_ios": "26"
    }
   },
   "api.CSSPageDescriptors.margin": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129",
     "safari": "26",
     "safari_ios": "26"
    }
   },
   "api.CSSPageDescriptors.margin-bottom": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129",
     "safari": "26",
     "safari_ios": "26"
    }
   },
   "api.CSSPageDescriptors.margin-left": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129",
     "safari": "26",
     "safari_ios": "26"
    }
   },
   "api.CSSPageDescriptors.margin-right": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129",
     "safari": "26",
     "safari_ios": "26"
    }
   },
   "api.CSSPageDescriptors.margin-top": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129",
     "safari": "26",
     "safari_ios": "26"
    }
   },
   "api.CSSPageDescriptors.marginBottom": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129",
     "safari": "26",
     "safari_ios": "26"
    }
   },
   "api.CSSPageDescriptors.marginLeft": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129",
     "safari": "26",
     "safari_ios": "26"
    }
   },
   "api.CSSPageDescriptors.marginRight": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129",
     "safari": "26",
     "safari_ios": "26"
    }
   },
   "api.CSSPageDescriptors.marginTop": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129",
     "safari": "26",
     "safari_ios": "26"
    }
   },
   "api.CSSPageDescriptors.page-orientation": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129"
    }
   },
   "api.CSSPageDescriptors.pageOrientation": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129"
    }
   },
   "api.CSSPageDescriptors.size": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129",
     "safari": "26",
     "safari_ios": "26"
    }
   },
   "api.CSSPageRule": {
    "baseline": "high",
    "baseline_high_date": "2018-01-29",
    "baseline_low_date": "2015-07-29",
    "support": {
     "chrome": "1",
     "chrome_android": "18",
     "edge": "12",
     "firefox": "19",
     "firefox_android": "19",
     "safari": "3",
     "safari_ios": "1"
    }
   },
   "api.CSSPageRule.selectorText": {
    "baseline": "high",
    "baseline_high_date": "2025-08-14",
    "baseline_low_date": "2023-02-14",
    "support": {
     "chrome": "1",
     "chrome_android": "18",
     "edge": "12",
     "firefox": "110",
     "firefox_android": "110",
     "safari": "3",
     "safari_ios": "1"
    }
   },
   "api.CSSPageRule.style": {
    "baseline": "high",
    "baseline_high_date": "2018-01-29",
    "baseline_low_date": "2015-07-29",
    "support": {
     "chrome": "1",
     "chrome_android": "18",
     "edge": "12",
     "firefox": "19",
     "firefox_android": "19",
     "safari": "3",
     "safari_ios": "1"
    }
   },
   "api.CSSPageRule.style.type_CSSPageDescriptors": {
    "baseline": false,
    "support": {
     "firefox": "129",
     "firefox_android": "129",
     "safari": "26",
     "safari_ios": "26"
    }
   },
   "api.CSSPseudoElement": {
    "baseline": false,
    "support": {
     "chrome": "149",
     "chrome_android": "149",
     "edge": "149"
    }
   },
   "api.CSSPseudoElement.element": {
    "baseline": false,
    "support": {
     "chrome": "149",
     "chrome_android": "149",
     "edge": "149"
    }
   },
   "api.CSSPseudoElement.type": {
    "baseline": false,
    "support": {
     "chrome": "149",
     "chrome_android": "149",
     "edge": "149"
    }
   },
   "api.CSSRule": {
    "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"
    }
   },
   "api.CSSRule.cssText": {
    "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"
    }
   },
   "api.CSSRule.parentRule": {
    "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"
    }
   },
   "api.CSSRule.parentStyleSheet": {
    "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"
    }
   },
   "api.CSSRuleList": {
    "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"
    }
   },
   "api.CSSRuleList.item": {
    "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"
    }
   },
   "api.CSSRuleList.length": {
    "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"
    }
   },
   "api.CSSStyleDeclaration": {
    "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"
    }
   },
   "api.CSSStyleDeclaration.@@iterator": {
    "baseline": "high",
    "baseline_high_date": "2021-04-02",
    "baseline_low_date": "2018-10-02",
    "support": {
     "chrome": "51",
     "chrome_android": "51",
     "edge": "18",
     "firefox": "36",
     "firefox_android": "36",
     "safari": "11",
     "safari_ios": "11"
    }
   },
   "api.CSSStyleDeclaration.cssText": {
    "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"
    }
   },
   "api.CSSStyleDeclaration.getPropertyPriority": {
    "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"
    }
   },
   "api.CSSStyleDeclaration.getPropertyValue": {
    "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"
    }
   },
   "api.CSSStyleDeclaration.item": {
    "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": "6",
     "safari_ios": "6"
    }
   },
   "api.CSSStyleDeclaration.length": {
    "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": "6",
     "safari_ios": "6"
    }
   },
   "api.CSSStyleDeclaration.parentRule": {
    "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"
    }
   },
   "api.CSSStyleDeclaration.removeProperty": {
    "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"
    }
   },
   "api.CSSStyleDeclaration.setProperty": {
    "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": "6",
     "safari_ios": "6"
    }
   },
   "api.CSSStyleRule": {
    "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"
    }
   },
   "api.CSSStyleRule.selectorText": {
    "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"
    }
   },
   "api.CSSStyleRule.style": {
    "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"
    }
   },
   "api.CSSStyleSheet": {
    "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"
    }
   },
   "api.CSSStyleSheet.cssRules": {
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    "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"
    }
   },
   "api.CSSStyleSheet.deleteRule": {
    "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"
    }
   },
   "api.CSSStyleSheet.insertRule": {
    "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"
    }
   },
   "api.CSSStyleSheet.insertRule.index_parameter_optional": {
    "baseline": "high",
    "baseline_high_date": "2020-02-08",
    "baseline_low_date": "2017-08-08",
    "support": {
     "chrome": "1",
     "chrome_android": "18",
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