---
root:
  items:
    - type: stacking-context
      bounds: [0, 0, 50, 50]
      items:
        - type: border
          bounds: [ 0, 0, 50, 50 ]
          width: [ 6, 6, 6, 6 ]
          border-type: normal
          style: [ solid, solid, solid, solid ]
          color: [ 0 0 170 1.0, 0 0 255 1.0, 0 0 255 1.0, 0 0 170 1.0 ]
    - type: stacking-context
      bounds: [6, 6, 38, 38]
      items:
        - type: border
          bounds: [ 0, 0, 38, 38 ]
          width: [ 6, 6, 6, 6 ]
          border-type: normal
          style: [ solid, solid, solid, solid ]
          color: [ 0 0 255 1.0, 0 0 170 1.0, 0 0 170 1.0, 0 0 255 1.0 ]