layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x137
  RenderBlock {HTML} at (0,0) size 800x137
    RenderBody {BODY} at (8,8) size 784x121
      RenderBlock (anonymous) at (0,0) size 784x21
        RenderInline {DIV} at (0,0) size 528x17 [color=#FFFFFF] [bgcolor=#FF0000]
          RenderText {#text} at (0,3) size 528x17
            text run at (0,3) width 528: "Ahem_font_required_for_this_test."
        RenderText {#text} at (0,0) size 0x0
      RenderBlock {DIV} at (0,21) size 300x100 [bgcolor=#FF0000]
        RenderBlock {DIV} at (0,0) size 600x200 [color=#008000]
          RenderText {#text} at (0,0) size 300x100
            text run at (0,0) width 300: "XXX"