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layer at (0,0) size 800x52
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    RenderBody {body} at (8,8) size 784x36
      RenderBlock {div} at (0,0) size 784x18
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          text run at (0,0) width 157: "This should be unstyled."
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        RenderText {#text} at (0,0) size 244x18
          text run at (0,0) width 244: "This should have a green background."