{
  "css": {
    "at-rules": {
      "document": {
        "__compat": {
          "description": "`@document`",
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/@document",
          "support": {
            "chrome": {
              "version_added": false
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": [
              {
                "prefix": "-moz-",
                "version_added": "61",
                "partial_implementation": true,
                "notes": "Only supports an empty `url-prefix()` value, which is supported due to its [use in Firefox browser detection](https://css-tricks.com/snippets/css/css-hacks-targeting-firefox/). Still supported in user stylesheets."
              },
              {
                "prefix": "-moz-",
                "version_added": "1.5",
                "version_removed": "61"
              }
            ],
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": false
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": false,
            "deprecated": true
          }
        }
      }
    }
  }
}