---
root:
  items:
    - type: stacking-context
      bounds: [0, 0, 500, 500]
      items:
        - type: border
          bounds: [ 0, 0, 500, 500 ]
          width: [ 12, 12, 12, 12 ]
          border-type: normal
          style: [ solid, none, none, none ]
          color: [ black ]