{
  "css": {
    "properties": {
      "margin-block-start": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/margin-block-start",
          "spec_url": "https://drafts.csswg.org/css-logical/#margin-properties",
          "tags": [
            "web-features:logical-properties"
          ],
          "support": {
            "chrome": {
              "version_added": "69"
            },
            "chrome_android": "mirror",
            "edge": "mirror",
            "firefox": {
              "version_added": "41"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": false
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "12.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "anchor-size": {
          "__compat": {
            "description": "`anchor-size()`",
            "spec_url": "https://drafts.csswg.org/css-anchor-position-1/#anchor-size-fn",
            "tags": [
              "web-features:anchor-positioning"
            ],
            "support": {
              "chrome": {
                "version_added": "132"
              },
              "chrome_android": "mirror",
              "edge": "mirror",
              "firefox": {
                "version_added": false
              },
              "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
            }
          }
        }
      }
    }
  }
}