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layer at (0,0) size 800x600
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    RenderBody {BODY} at (8,8) size 784x578
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        RenderText {#text} at (0,0) size 412x19
          text run at (0,0) width 412: "The inner blue box should be 50% as tall as the outer yellow box."
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  RenderBlock (positioned) {DIV} at (8,30) size 304x540 [bgcolor=#FFFF00] [border: (2px dashed #000000)]
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