{
  "css": {
    "properties": {
      "animation-duration": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/animation-duration",
          "spec_url": "https://drafts.csswg.org/css-animations/#animation-duration",
          "tags": [
            "web-features:animations-css"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "43"
              },
              {
                "prefix": "-webkit-",
                "version_added": "3"
              }
            ],
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "12"
              },
              {
                "prefix": "-webkit-",
                "version_added": "12"
              }
            ],
            "firefox": [
              {
                "version_added": "16"
              },
              {
                "prefix": "-webkit-",
                "version_added": "49"
              },
              {
                "prefix": "-moz-",
                "version_added": "5"
              }
            ],
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10",
              "partial_implementation": true,
              "notes": "Once the element has loaded, changing the value of this property has no effect."
            },
            "oculus": "mirror",
            "opera": [
              {
                "version_added": "30"
              },
              {
                "prefix": "-webkit-",
                "version_added": "15"
              },
              {
                "version_added": "12.1",
                "version_removed": "15"
              },
              {
                "prefix": "-o-",
                "version_added": "12",
                "version_removed": "15"
              }
            ],
            "opera_android": [
              {
                "version_added": "30"
              },
              {
                "prefix": "-webkit-",
                "version_added": "14"
              },
              {
                "version_added": "12.1",
                "version_removed": "14"
              },
              {
                "prefix": "-o-",
                "version_added": "12",
                "version_removed": "14"
              }
            ],
            "safari": [
              {
                "version_added": "9"
              },
              {
                "prefix": "-webkit-",
                "version_added": "4"
              }
            ],
            "safari_ios": [
              {
                "version_added": "9"
              },
              {
                "prefix": "-webkit-",
                "version_added": "4.2"
              }
            ],
            "samsunginternet_android": "mirror",
            "webview_android": [
              {
                "version_added": "43"
              },
              {
                "prefix": "-webkit-",
                "version_added": "2"
              }
            ],
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "auto": {
          "__compat": {
            "description": "`auto` value",
            "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/animation-duration#Values",
            "spec_url": "https://drafts.csswg.org/css-animations-2/#valdef-animation-duration-auto",
            "tags": [
              "web-features:animations-css"
            ],
            "support": {
              "chrome": {
                "version_added": "115"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": false,
                "notes": "Firefox does not currently support the `auto` value and only accepts values in seconds or milliseconds. It's recommended that _1ms_ is used until `auto` is supported."
              },
              "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": true,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}