layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x90
  RenderBlock {HTML} at (0,0) size 800x90
    RenderBody {BODY} at (8,16) size 784x58
      RenderBlock {P} at (0,0) size 784x58
        RenderMathMLMath {math} at (0,0) size 112x58
          RenderMathMLRow {mrow} at (0,0) size 112x58
            RenderMathMLMenclose {menclose} at (0,0) size 112x58
              RenderMathMLSpace {mspace} at (7,3) size 101x51 [bgcolor=#FF0000]
        RenderText {#text} at (0,0) size 0x0