layer at (0,0) size 800x600
  RenderCanvas at (0,0) size 800x600
layer at (0,0) size 800x88
  RenderBlock {HTML} at (0,0) size 800x88
    RenderBody {BODY} at (8,8) size 784x56
      RenderBlock {PRE} at (0,0) size 784x56
        RenderText {TEXT} at (0,0) size 210x56
          text run at (0,0) width 210: "This is a test."
          text run at (0,28) width 196: "Big font size?"
