# Verifies that a 3d context selects the correct reference (containing block) spatial node.
root:
  items:
    - type: stacking-context
      bounds: 100 0 100 100
      transform: scale-x(-1)
      items:
      - type: stacking-context
        bounds: 0 0 100 100
        transform: rotate-y(180)
        transform-style: preserve-3d
        items:
        - type: rect
          bounds: 0 0 100 100
          color: red
          backface-visible: false
