---
root:
  items:
    - type: stacking-context
      bounds: [0, 0, 50, 50]
      items:
        - type: border
          bounds: [ 0, 0, 50, 50 ]
          width: [ 4, 4, 4, 4 ]
          border-type: normal
          style: [ solid, solid, solid, solid ]
          color: [ blue, blue, blue, blue ]
    - type: stacking-context
      bounds: [8, 8, 34, 34]
      items:
        - type: border
          bounds: [ 0, 0, 34, 34 ]
          width: [ 4, 4, 4, 4 ]
          border-type: normal
          style: [ solid, solid, solid, solid ]
          color: [ blue, blue, blue, blue ]