{
  "layout": {
    "zIndex": {
      "deep": {
        "value": "-1"
      },
      "content": {
        "value": "0"
      },
      "sticky": {
        "value": "100"
      },
      "overlay": {
        "value": "200"
      },
      "modal": {
        "value": "300"
      },
      "dropdownable": {
        "value": "400"
      }
    }
  }
}