{
  "css": {
    "properties": {
      "grid-auto-columns": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/grid-auto-columns",
          "support": {
            "chrome": [
              {
                "version_added": "57"
              },
              {
                "version_added": "29",
                "flags": [
                  {
                    "type": "preference",
                    "name": "Enable experimental Web Platform features"
                  }
                ]
              }
            ],
            "chrome_android": [
              {
                "version_added": "57"
              },
              {
                "version_added": "29",
                "flags": [
                  {
                    "type": "preference",
                    "name": "Enable experimental Web Platform features"
                  }
                ]
              }
            ],
            "edge": [
              {
                "version_added": "16"
              },
              {
                "version_added": "12",
                "alternative_name": "-ms-grid-columns"
              }
            ],
            "firefox": [
              {
                "version_added": "70"
              },
              {
                "version_added": "52",
                "version_removed": "70",
                "partial_implementation": true,
                "notes": "Does not accept multiple track-size values.  See <a href='https://bugzil.la/1339672'>bug 1339672</a>."
              },
              {
                "version_added": "40",
                "version_removed": "59",
                "partial_implementation": true,
                "notes": "Does not accept multiple track-size values. See <a href='https://bugzil.la/1339672'>bug 1339672</a>.",
                "flags": [
                  {
                    "type": "preference",
                    "name": "layout.css.grid.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "52",
                "partial_implementation": true,
                "notes": "Does not accept multiple track-size values. See <a href='https://bugzil.la/1339672'>bug 1339672</a>."
              },
              {
                "version_added": "40",
                "version_removed": "59",
                "partial_implementation": true,
                "notes": "Does not accept multiple track-size values. See <a href='https://bugzil.la/1339672'>bug 1339672</a>.",
                "flags": [
                  {
                    "type": "preference",
                    "name": "layout.css.grid.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
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              "version_added": "10",
              "alternative_name": "-ms-grid-columns"
            },
            "opera": [
              {
                "version_added": "44"
              },
              {
                "version_added": "28",
                "flags": [
                  {
                    "type": "preference",
                    "name": "Enable experimental Web Platform features"
                  }
                ]
              }
            ],
            "opera_android": [
              {
                "version_added": "43"
              },
              {
                "version_added": "28",
                "flags": [
                  {
                    "type": "preference",
                    "name": "Enable experimental Web Platform features"
                  }
                ]
              }
            ],
            "safari": {
              "version_added": "10.1"
            },
            "safari_ios": {
              "version_added": "10.3"
            },
            "samsunginternet_android": {
              "version_added": "6.0"
            },
            "webview_android": {
              "version_added": "57"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}