layer at (0,0) size 800x600
  RenderCanvas at (0,0) size 800x600
layer at (0,0) size 800x84
  RenderBlock {HTML} at (0,0) size 800x84
    RenderBody {BODY} at (8,14) size 784x62
      RenderBlock {P} at (0,0) size 784x17
        RenderText {TEXT} at (0,0) size 209x17
          text run at (0,0) width 209: "There should be no red below."
      RenderBlock {DIV} at (0,45) size 784x17 [bgcolor=#FF0000]
        RenderBlock {DIV} at (0,0) size 784x17
          RenderBlock {DIV} at (0,0) size 784x17
            RenderBlock {DIV} at (0,0) size 784x17 [color=#FFFFFF] [bgcolor=#008000]
              RenderText {TEXT} at (0,0) size 177x17
                text run at (0,0) width 177: "This line should be green."
