Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x34 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 0x18 children: inline
      frag 0 from BlockContainer start: 0, length: 0, rect: [8,21 0x0] baseline: 0
      BlockContainer <div> at (8,21) content-size 0x0 inline-block [BFC] children: not-inline

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x34]
    PaintableWithLines (BlockContainer<BODY>) [8,8 0x18]
      PaintableWithLines (BlockContainer<DIV>) [8,21 0x0]
