layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 300x300
  RenderSVGRoot {svg} at (0,0) size 200x200
    RenderSVGRect {rect} at (0,0) size 200x200 [fill={[type=SOLID] [color=#0000FF]}] [x=0.00] [y=0.00] [width=200.00] [height=200.00]
    RenderSVGViewportContainer {svg} at (0,0) size 100x100
      RenderSVGRect {rect} at (0,0) size 100x100 [fill={[type=SOLID] [color=#008000]}] [x=0.00] [y=0.00] [width=100.00] [height=100.00]