{
  "css": {
    "properties": {
      "mask-position": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/mask-position",
          "support": {
            "chrome": {
              "prefix": "-webkit-",
              "version_added": "1"
            },
            "chrome_android": {
              "prefix": "-webkit-",
              "version_added": "18"
            },
            "edge": {
              "version_added": "18"
            },
            "firefox": [
              {
                "version_added": "53"
              },
              {
                "version_added": "20",
                "version_removed": "53",
                "flags": [
                  {
                    "type": "preference",
                    "name": "layout.css.masking.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "53"
              },
              {
                "version_added": "20",
                "version_removed": "53",
                "flags": [
                  {
                    "type": "preference",
                    "name": "layout.css.masking.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": false
            },
            "opera": {
              "prefix": "-webkit-",
              "version_added": "15"
            },
            "opera_android": {
              "prefix": "-webkit-",
              "version_added": "14"
            },
            "safari": {
              "prefix": "-webkit-",
              "version_added": "3.2"
            },
            "safari_ios": {
              "prefix": "-webkit-",
              "version_added": "3.2"
            },
            "samsunginternet_android": {
              "prefix": "-webkit-",
              "version_added": "1.0"
            },
            "webview_android": {
              "prefix": "-webkit-",
              "version_added": "2"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "three_value_syntax": {
          "__compat": {
            "description": "Support for three-value syntax of position",
            "support": {
              "chrome": {
                "prefix": "-webkit-",
                "version_added": "1",
                "version_removed": "68"
              },
              "chrome_android": {
                "prefix": "-webkit-",
                "version_added": "18",
                "version_removed": "68"
              },
              "edge": {
                "version_added": "18",
                "version_removed": "79"
              },
              "firefox": [
                {
                  "version_added": "53",
                  "version_removed": "70"
                },
                {
                  "version_added": "20",
                  "version_removed": "53",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "layout.css.masking.enabled",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "firefox_android": [
                {
                  "version_added": "53"
                },
                {
                  "version_added": "20",
                  "version_removed": "53",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "layout.css.masking.enabled",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "ie": {
                "version_added": false
              },
              "opera": {
                "prefix": "-webkit-",
                "version_added": "15",
                "version_removed": "55"
              },
              "opera_android": {
                "prefix": "-webkit-",
                "version_added": "14",
                "version_removed": "48"
              },
              "safari": {
                "prefix": "-webkit-",
                "version_added": "3.2"
              },
              "safari_ios": {
                "prefix": "-webkit-",
                "version_added": "3.2"
              },
              "samsunginternet_android": {
                "prefix": "-webkit-",
                "version_added": "1.0",
                "version_removed": "10.0"
              },
              "webview_android": {
                "prefix": "-webkit-",
                "version_added": "2",
                "version_removed": "68"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}