Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] [BFC] children: not-inline
  BlockContainer <html> at [0,0] [0+0+0 800 0+0+0] [0+0+0 96 0+0+0] [BFC] children: not-inline
    BlockContainer <body> at [8,8] [8+0+0 784 0+0+8] [8+0+0 80 0+0+8] children: not-inline
      Box <div.grid.a> at [8,8] [0+0+0 450 0+0+334] [0+0+0 40 0+0+0] [GFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.item> at [8,8] [0+0+0 150 0+0+0] [0+0+0 40 0+0+0] [BFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.item> at [158,8] [0+0+0 150 0+0+0] [0+0+0 40 0+0+0] [BFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.item> at [308,8] [0+0+0 150 0+0+0] [0+0+0 40 0+0+0] [BFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
      BlockContainer <(anonymous)> at [8,48] [0+0+0 784 0+0+0] [0+0+0 0 0+0+0] children: inline
        TextNode <#text> (not painted)
      Box <div.grid.b> at [8,48] [0+0+0 450 0+0+334] [0+0+0 40 0+0+0] [GFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.item> at [8,48] [0+0+0 200 0+0+0] [0+0+0 40 0+0+0] [BFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.item> at [208,48] [0+0+0 200 0+0+0] [0+0+0 40 0+0+0] [BFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
      BlockContainer <(anonymous)> at [8,88] [0+0+0 784 0+0+0] [0+0+0 0 0+0+0] children: inline
        TextNode <#text> (not painted)

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x96]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x80]
      Paintable (Box<DIV>.grid.a) [8,8 450x40]
        PaintableWithLines (BlockContainer<DIV>.item) [8,8 150x40]
        PaintableWithLines (BlockContainer<DIV>.item) [158,8 150x40]
        PaintableWithLines (BlockContainer<DIV>.item) [308,8 150x40]
      PaintableWithLines (BlockContainer(anonymous)) [8,48 784x0]
      Paintable (Box<DIV>.grid.b) [8,48 450x40]
        PaintableWithLines (BlockContainer<DIV>.item) [8,48 200x40]
        PaintableWithLines (BlockContainer<DIV>.item) [208,48 200x40]
      PaintableWithLines (BlockContainer(anonymous)) [8,88 784x0]

SC for Viewport<#document> [0,0 800x600] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x96] (z-index: auto)
