layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x600
  RenderBlock {HTML} at (0,0) size 800x600
    RenderBody {BODY} at (8,8) size 784x564
      RenderBlock {PRE} at (0,0) size 784x74
        RenderText {#text} at (0,0) size 171x73
          text run at (0,0) width 167: "This is a test."
          text run at (167,0) width 0: " "
          text run at (0,37) width 171: "Big font size?"
          text run at (171,37) width 0: " "
