{
  "css": {
    "properties": {
      "appearance": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/appearance",
          "support": {
            "chrome": {
              "version_added": "1",
              "partial_implementation": true,
              "prefix": "-webkit-"
            },
            "chrome_android": {
              "version_added": "18",
              "partial_implementation": true,
              "prefix": "-webkit-"
            },
            "edge": {
              "version_added": "12",
              "partial_implementation": true,
              "prefix": "-webkit-"
            },
            "firefox": [
              {
                "version_added": "1",
                "partial_implementation": true,
                "prefix": "-moz-"
              },
              {
                "version_added": "64",
                "partial_implementation": true,
                "prefix": "-webkit-"
              },
              {
                "version_added": "62",
                "partial_implementation": true,
                "prefix": "-webkit-",
                "flags": [
                  {
                    "type": "preference",
                    "name": "layout.css.webkit-appearance.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "4",
                "partial_implementation": true,
                "prefix": "-moz-"
              },
              {
                "version_added": "64",
                "partial_implementation": true,
                "prefix": "-webkit-"
              },
              {
                "version_added": "62",
                "partial_implementation": true,
                "prefix": "-webkit-",
                "flags": [
                  {
                    "type": "preference",
                    "name": "layout.css.webkit-appearance.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "version_added": "15",
              "partial_implementation": true,
              "prefix": "-webkit-"
            },
            "opera_android": {
              "version_added": "14",
              "partial_implementation": true,
              "prefix": "-webkit-"
            },
            "safari": {
              "version_added": "3",
              "partial_implementation": true,
              "prefix": "-webkit-"
            },
            "safari_ios": {
              "version_added": "1",
              "partial_implementation": true,
              "prefix": "-webkit-"
            },
            "samsunginternet_android": {
              "version_added": "1.0",
              "partial_implementation": true,
              "prefix": "-webkit-"
            },
            "webview_android": {
              "version_added": "1",
              "partial_implementation": true,
              "prefix": "-webkit-"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        },
        "auto": {
          "__compat": {
            "support": {
              "chrome": {
                "version_added": false
              },
              "chrome_android": {
                "version_added": false
              },
              "edge": {
                "version_added": false
              },
              "firefox": {
                "version_added": false
              },
              "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": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "button": {
          "__compat": {
            "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": false
              },
              "opera": {
                "version_added": "15"
              },
              "opera_android": {
                "version_added": "14"
              },
              "safari": {
                "version_added": "3"
              },
              "safari_ios": {
                "version_added": "1"
              },
              "samsunginternet_android": {
                "version_added": "1.0"
              },
              "webview_android": {
                "version_added": "1"
              }
            },
            "status": {
              "experimental": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "compat-auto": {
          "__compat": {
            "description": "<code>&lt;compat-auto&gt;</code> (compatibility values <code>searchfield</code>, <code>textarea</code>, <code>push-button</code>, <code>slider-horizontal</code>, <code>checkbox</code>, <code>radio</code>, <code>square-button</code>, <code>menulist</code>, <code>listbox</code>, <code>meter</code>, <code>progress-bar</code>)",
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": {
                "version_added": "18"
              },
              "edge": {
                "version_added": "12",
                "partial_implementation": true
              },
              "firefox": {
                "version_added": "1",
                "partial_implementation": true
              },
              "firefox_android": {
                "version_added": "4",
                "partial_implementation": true
              },
              "ie": {
                "version_added": false
              },
              "opera": {
                "version_added": "15"
              },
              "opera_android": {
                "version_added": "14"
              },
              "safari": {
                "version_added": "3"
              },
              "safari_ios": {
                "version_added": "1"
              },
              "samsunginternet_android": {
                "version_added": "1.0"
              },
              "webview_android": {
                "version_added": "≤37"
              }
            },
            "status": {
              "experimental": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "menulist-button": {
          "__compat": {
            "description": "<code>menulist-button</code>",
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": {
                "version_added": "18"
              },
              "edge": {
                "version_added": "12",
                "partial_implementation": true
              },
              "firefox": {
                "version_added": "1",
                "partial_implementation": true,
                "notes": "See <a href='https://bugzil.la/1481615'>bug 1481615</a>."
              },
              "firefox_android": {
                "version_added": "4",
                "partial_implementation": true
              },
              "ie": {
                "version_added": false
              },
              "opera": {
                "version_added": "15"
              },
              "opera_android": {
                "version_added": "14"
              },
              "safari": {
                "version_added": "3"
              },
              "safari_ios": {
                "version_added": "1"
              },
              "samsunginternet_android": {
                "version_added": "1.0"
              },
              "webview_android": {
                "version_added": "≤37"
              }
            },
            "status": {
              "experimental": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "none": {
          "__compat": {
            "support": {
              "chrome": {
                "version_added": "1"
              },
              "chrome_android": {
                "version_added": "18"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": [
                {
                  "version_added": "54"
                },
                {
                  "version_added": "1",
                  "partial_implementation": true,
                  "notes": "Doesn't work with <code>&lt;input type=\"checkbox\"&gt;</code> and <code>&lt;input type=\"radio\"&gt;</code>."
                }
              ],
              "firefox_android": {
                "version_added": "4",
                "partial_implementation": true,
                "notes": "Doesn't work with <code>&lt;input type=\"checkbox\"&gt;</code> and <code>&lt;input type=\"radio\"&gt;</code>."
              },
              "ie": {
                "version_added": false
              },
              "opera": {
                "version_added": "15"
              },
              "opera_android": {
                "version_added": "14"
              },
              "safari": {
                "version_added": "3"
              },
              "safari_ios": {
                "version_added": "3"
              },
              "samsunginternet_android": {
                "version_added": "1.0"
              },
              "webview_android": {
                "version_added": "1"
              }
            },
            "status": {
              "experimental": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "textfield": {
          "__compat": {
            "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": false
              },
              "opera": {
                "version_added": "15"
              },
              "opera_android": {
                "version_added": "14"
              },
              "safari": {
                "version_added": "3"
              },
              "safari_ios": {
                "version_added": "1"
              },
              "samsunginternet_android": {
                "version_added": "1.0"
              },
              "webview_android": {
                "version_added": "1"
              }
            },
            "status": {
              "experimental": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}