{
  "css": {
    "properties": {
      "grid-auto-columns": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/grid-auto-columns",
          "spec_url": "https://drafts.csswg.org/css-grid/#auto-tracks",
          "tags": [
            "web-features:grid"
          ],
          "support": {
            "chrome": {
              "version_added": "57"
            },
            "chrome_android": "mirror",
            "edge": [
              {
                "version_added": "16"
              },
              {
                "alternative_name": "-ms-grid-columns",
                "version_added": "12",
                "version_removed": "79"
              }
            ],
            "firefox": [
              {
                "version_added": "70"
              },
              {
                "version_added": "52",
                "version_removed": "70",
                "partial_implementation": true,
                "notes": "Does not accept multiple track-size values. See [bug 1339672](https://bugzil.la/1339672)."
              }
            ],
            "firefox_android": "mirror",
            "ie": {
              "alternative_name": "-ms-grid-columns",
              "version_added": "10"
            },
            "oculus": "mirror",
            "opera": "mirror",
            "opera_android": "mirror",
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": {
              "version_added": "6.0"
            },
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}