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  RenderView at (0,0) size 800x600
layer at (0,0) size 800x53
  RenderBlock {html} at (0,0) size 800x53 [bgcolor=#00FF00]
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      RenderBlock {p} at (0,0) size 784x21
        RenderText {#text} at (0,0) size 352x21
          text run at (0,0) width 352: "The background of the document should be green"