Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (1,1) content-size 798x18 [BFC] children: not-inline
    BlockContainer <body> at (10,10) content-size 780x0 children: not-inline
      BlockContainer <div#foo> at (350,1) content-size 100x100 positioned [BFC] children: not-inline
      BlockContainer <div#bar> at (699,101) content-size 100x100 positioned [BFC] children: not-inline
      BlockContainer <div#baz> at (1,201) content-size 100x100 positioned [BFC] children: not-inline

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x20]
    PaintableWithLines (BlockContainer<BODY>) [9,9 782x2]
      PaintableWithLines (BlockContainer<DIV>#foo) [349,0 102x102]
      PaintableWithLines (BlockContainer<DIV>#bar) [698,100 102x102]
      PaintableWithLines (BlockContainer<DIV>#baz) [0,200 102x102]
