Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x224 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x208 children: not-inline
      Box <div.grid> at (8,8) content-size 784x208 [GFC] children: not-inline
        BlockContainer <div.item> at (10,10) content-size 780x100 [BFC] children: not-inline
        BlockContainer <div.item> at (10,114) content-size 780x100 [BFC] children: not-inline

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x224]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x208]
      PaintableBox (Box<DIV>.grid) [8,8 784x208]
        PaintableWithLines (BlockContainer<DIV>.item) [8,8 784x104]
        PaintableWithLines (BlockContainer<DIV>.item) [8,112 784x104]
