Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] children: not-inline
  BlockContainer <html> at [1,1] [0+1+0 798 0+1+0] [0+1+0 220 0+1+0] [BFC] children: not-inline
    BlockContainer <body> at [10,10] [8+1+0 780 0+1+8] [8+1+0 202 0+1+8] children: not-inline
      Box <div.grid> at [11,11] positioned [0+1+0 200 0+1+578] [0+1+0 200 0+1+0] [GFC] children: not-inline
        BlockContainer <div.abspos-item> at [137,37] positioned [0+1+0 48 0+1+0] [0+1+0 48 0+1+0] [BFC] children: not-inline

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x222]
    PaintableWithLines (BlockContainer<BODY>) [9,9 782x204]
      PaintableBox (Box<DIV>.grid) [10,10 202x202]
        PaintableWithLines (BlockContainer<DIV>.abspos-item) [136,36 50x50]

SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
 SC for BlockContainer<HTML> [1,1 798x220] [children: 0] (z-index: auto)
