layer at (0,0) size 800x600
  RenderCanvas at (0,0) size 800x600
layer at (0,0) size 800x50
  RenderBlock {HTML} at (0,0) size 800x50
    RenderBody {BODY} at (8,16) size 784x18 [color=#FF0000]
      RenderBlock {P} at (0,0) size 784x18 [color=#008000]
        RenderInline (anonymous) at (0,0) size 163x18
          RenderText at (0,0) size 163x18
            text run at (0,0) width 163: "This text should be green."
