layer at (0,0) size 800x600
  RenderCanvas at (0,0) size 800x600
layer at (0,0) size 800x140
  RenderBlock {HTML} at (0,0) size 800x140
    RenderBody {BODY} at (8,8) size 784x112
      RenderBlock (anonymous) at (0,0) size 784x18
        RenderInline {DIV} at (0,0) size 528x16 [color=#FFFFFF] [bgcolor=#FF0000]
          RenderText {TEXT} at (16,1) size 528x16
            text run at (16,1) width 528: "Ahem_font_required_for_this_test."
        RenderText {TEXT} at (0,0) size 0x0
      RenderBlock {P} at (0,34) size 784x18
        RenderText {TEXT} at (0,0) size 286x18
          text run at (0,0) width 286: "There should be a green block below, no red."
      RenderBlock {DIV} at (20,72) size 80x40 [color=#008000] [bgcolor=#FF0000]
        RenderText {TEXT} at (0,0) size 80x40
          text run at (0,0) width 80: "xxxx"
          text run at (0,20) width 80: "xxxx"