layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x600
  RenderBlock {HTML} at (0,0) size 800x600
    RenderBody {BODY} at (8,8) size 784x584
layer at (8,8) size 400x400
  RenderBlock {DIV} at (0,0) size 400x400 [bgcolor=#FFFFE0]
    RenderIFrame {IFRAME} at (7,7) size 386x386 [border: (3px solid #000000)]
      layer at (0,0) size 900x900
        RenderView at (0,0) size 380x380
      layer at (0,0) size 900x900
        RenderBlock (relative positioned) {HTML} at (0,0) size 900x900
          RenderBody {BODY} at (8,8) size 884x364
      layer at (0,0) size 100x100
        RenderBlock (positioned) {DIV} at (0,0) size 100x100 [bgcolor=#FF0000]
      layer at (800,800) size 100x100
        RenderBlock (positioned) {DIV} at (800,800) size 100x100 [bgcolor=#008000]
    RenderText {#text} at (0,0) size 0x0