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
      RenderBlock {DIV} at (0,0) size 50x100 [bgcolor=#FF0000]
      RenderBlock {DIV} at (50,0) size 50x100
        RenderBlock {DIV} at (-50,0) size 100x100 [bgcolor=#008000]
        RenderText {#text} at (0,0) size 0x0
      RenderText {#text} at (0,0) size 0x0
