{
  "css": {
    "selectors": {
      "empty": {
        "__compat": {
          "description": "<code>:empty</code>",
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:empty",
          "support": {
            "chrome": {
              "version_added": "1"
            },
            "chrome_android": {
              "version_added": "18"
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": {
              "version_added": "4"
            },
            "ie": {
              "version_added": "9"
            },
            "opera": {
              "version_added": "9.5"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "3.1"
            },
            "safari_ios": {
              "version_added": "3.1"
            },
            "samsunginternet_android": {
              "version_added": "1.0"
            },
            "webview_android": {
              "version_added": "2"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "matches_whitespace": {
          "__compat": {
            "description": "Matches elements with whitespace",
            "support": {
              "chrome": {
                "version_added": false
              },
              "chrome_android": {
                "version_added": false
              },
              "edge": {
                "version_added": false
              },
              "firefox": {
                "version_added": false,
                "notes": "See <a href='https://bugzil.la/1106296'>bug 1106296</a>."
              },
              "firefox_android": {
                "version_added": false
              },
              "ie": {
                "version_added": false
              },
              "opera": {
                "version_added": false
              },
              "opera_android": {
                "version_added": false
              },
              "safari": {
                "version_added": false
              },
              "safari_ios": {
                "version_added": false
              },
              "samsunginternet_android": {
                "version_added": false
              },
              "webview_android": {
                "version_added": false
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}