layer at (0,0) size 800x600
  RenderCanvas at (0,0) size 800x600
layer at (0,0) size 800x225
  RenderBlock {HTML} at (0,0) size 800x133
    RenderBody {BODY} at (8,8) size 784x117
      RenderBlock (anonymous) at (0,0) size 784x17
        RenderInline {DIV} at (0,0) size 462x14 [color=#FFFFFF] [bgcolor=#FF0000]
          RenderText {TEXT} at (0,3) size 462x14
            text run at (0,3) width 462: "Ahem_font_required_for_this_test."
        RenderText {TEXT} at (0,0) size 0x0
      RenderBlock {DIV} at (0,17) size 300x100 [bgcolor=#FF0000]
        RenderBlock {DIV} at (0,0) size 600x200 [color=#008000] [bgcolor=#000000]
          RenderText {TEXT} at (0,0) size 300x100
            text run at (0,0) width 300: "XXX"