Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (1,1) content-size 798x40 [BFC] children: not-inline
    BlockContainer <body> at (10,10) content-size 41.953125x22 floating [BFC] children: not-inline
      Box <div.grid> at (11,11) content-size 39.953125x20 [GFC] children: not-inline
        BlockContainer <div.whee> at (12,12) content-size 37.953125x18 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 4, rect: [12,12 37.953125x18] baseline: 13.796875
              "whee"
          TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x42]
    PaintableWithLines (BlockContainer<BODY>) [9,9 43.953125x24]
      PaintableBox (Box<DIV>.grid) [10,10 41.953125x22]
        PaintableWithLines (BlockContainer<DIV>.whee) [11,11 39.953125x20]
          TextPaintable (TextNode<#text>)
