layer at (0,0) size 800x600
  RenderCanvas 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 {P} at (0,0) size 784x18
        RenderText {TEXT} at (0,0) size 609x18
          text run at (0,0) width 178: "You should see a single 100"
          text run at (178,0) width 431: "x100 green square below. If you see any red, then the test has failed."
      RenderFlexibleBox {DIV} at (0,34) size 300x100
        RenderFlexibleBox {DIV} at (0,0) size 100x100 [bgcolor=#FF0000]
          RenderFlexibleBox {DIV} at (0,0) size 0x100
          RenderBlock {DIV} at (0,0) size 100x100 [bgcolor=#008000]
          RenderFlexibleBox {DIV} at (100,0) size 0x100
