{
  "css": {
    "properties": {
      "contain": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/contain",
          "support": {
            "chrome": {
              "version_added": "52"
            },
            "chrome_android": {
              "version_added": "52"
            },
            "edge": {
              "version_added": null
            },
            "edge_mobile": {
              "version_added": null
            },
            "firefox": {
              "version_added": true,
              "flags": [
                {
                  "type": "preference",
                  "name": "layout.css.contain.enabled",
                  "value_to_set": "true"
                }
              ],
              "notes": "See <a href='https://bugzil.la/1150081'>bug 1150081</a> for the overall implementation status."
            },
            "firefox_android": {
              "version_added": true,
              "flags": [
                {
                  "type": "preference",
                  "name": "layout.css.contain.enabled",
                  "value_to_set": "true"
                }
              ],
              "notes": "See <a href='https://bugzil.la/1150081'>bug 1150081</a> for the overall implementation status."
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": "40"
            },
            "opera_android": {
              "version_added": "40"
            },
            "safari": {
              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "webview_android": {
              "version_added": "52"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}