layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x116
  RenderBlock {HTML} at (0,0) size 800x116
    RenderBody {BODY} at (8,8) size 784x100
      RenderBlock {DIV} at (0,0) size 100x100 [bgcolor=#FF0000]
        RenderBlock {DIV} at (0,0) size 100x100
          RenderBlock {DIV} at (0,0) size 100x0
          RenderBlock (anonymous) at (0,0) size 100x100
            RenderIFrame {IFRAME} at (0,0) size 100x100 [bgcolor=#008000]
              layer at (0,0) size 100x100
                RenderView at (0,0) size 100x100
              layer at (0,0) size 100x100
                RenderBlock {HTML} at (0,0) size 100x100
                  RenderBody {BODY} at (8,8) size 84x84
            RenderText {#text} at (0,0) size 0x0