layer at (0,0) size 800x600
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layer at (0,0) size 800x137
  RenderBlock {HTML} at (0,0) size 800x137
    RenderBody {BODY} at (8,21) size 784x95 [color=#008000]
      RenderBlock {H1} at (0,0) size 784x37
        RenderText {#text} at (0,0) size 398x37
          text run at (0,0) width 398: "This should be green, not red"
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        RenderText {#text} at (0,0) size 411x37
          text run at (0,0) width 411: "This should be green, not blue"
