{
  "css": {
    "properties": {
      "aspect-ratio": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/aspect-ratio",
          "support": {
            "chrome": {
              "version_added": "79",
              "partial_implementation": true,
              "notes": "Chrome 79 adds internal support only for mapped values"
            },
            "chrome_android": {
              "version_added": "79",
              "partial_implementation": true,
              "notes": "Chrome 79 adds internal support only for mapped values"
            },
            "edge": {
              "version_added": "79",
              "partial_implementation": true,
              "notes": "Edge 79 adds internal support only for mapped values"
            },
            "firefox": [
              {
                "version_added": "71",
                "partial_implementation": true,
                "notes": "Firefox 71 adds internal support only for mapped values"
              },
              {
                "version_added": "69",
                "version_removed": "71",
                "partial_implementation": true,
                "notes": "Firefox 69 adds internal support only for mapped values",
                "flags": [
                  {
                    "type": "preference",
                    "name": "layout.css.width-and-height-map-to-aspect-ratio.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "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": "79",
              "partial_implementation": true,
              "notes": "Webview 79 adds internal support only for mapped values"
            }
          },
          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        },
        "internal-value": {
          "__compat": {
            "description": "Internal mapping of width and height",
            "support": {
              "chrome": {
                "version_added": "79"
              },
              "chrome_android": {
                "version_added": "79"
              },
              "edge": {
                "version_added": "79"
              },
              "firefox": [
                {
                  "version_added": "71"
                },
                {
                  "version_added": "69",
                  "version_removed": "71",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "layout.css.width-and-height-map-to-aspect-ratio.enabled",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "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": "79"
              }
            },
            "status": {
              "experimental": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}