Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x256 [BFC] children: not-inline
    BlockContainer <body> at (8,248) content-size 784x0 positioned children: not-inline
      BlockContainer <div.abspos> at (8,8) content-size 784x240 positioned [BFC] children: not-inline

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x256]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x240]
      PaintableWithLines (BlockContainer<DIV>.abspos) [8,8 784x240]
