---
root:
  items:
    - type: stacking-context
      bounds: [0, 0, 500, 500]
      items:
        - type: border
          bounds: [ 0, 0, 50, 50 ]
          width: [ 12, 12, 12, 12 ]
          border-type: normal
          style: [ double, double, double, double ]
          color: [ blue, blue, blue, blue ]