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  RenderView at (0,0) size 800x600
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layer at (40,77) size 80x80
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layer at (40,397) size 80x80
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layer at (216,77) size 80x80
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layer at (0,0) size 800x485 layerType: foreground only
  RenderBlock {HTML} at (0,0) size 800x485
    RenderBody {BODY} at (8,8) size 784x469
      RenderBlock (anonymous) at (0,0) size 784x19
        RenderText {#text} at (0,0) size 490x19
          text run at (0,0) width 490: "You should see four 80x80 green squares below and no red should be visible."
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    RenderBlock {DIV} at (0,0) size 550x450
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      RenderFlowThread at (0,0) size 500x450
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    layer at (50,50) size 400x400
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    RenderRegion {DIV} #region2