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layer at (0,0) size 800x52
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    RenderBlock {p} at (0,16) size 800x20
      RenderInline (generated) at (0,0) size 10x19 [bgcolor=#00FF00]
        RenderText {#text} at (0,0) size 10x19
          text run at (0,0) width 10: "T"
      RenderText {#text} at (9,0) size 410x19
        text run at (9,0) width 410: "he first letter of this paragraph should have a green background."
