Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (1,1) content-size 798x95 [BFC] children: not-inline
    BlockContainer <body> at (10,10) content-size 780x77 children: not-inline
      Box <div.grid-container> at (11,11) content-size 778x75 [GFC] children: not-inline
        BlockContainer <div.grid-item.a> at (12,12) content-size 257.328125x73 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [12,12 6.34375x18] baseline: 13.796875
              "1"
          TextNode <#text>
        BlockContainer <div.grid-item.b> at (530.65625,12) content-size 257.328125x48 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [530.65625,12 8.8125x18] baseline: 13.796875
              "2"
          TextNode <#text>
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              "3"
          TextNode <#text>
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          frag 0 from TextNode start: 0, length: 1, rect: [271.328125,62 7.75x18] baseline: 13.796875
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          TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x97]
    PaintableWithLines (BlockContainer<BODY>) [9,9 782x79]
      PaintableBox (Box<DIV>.grid-container) [10,10 780x77]
        PaintableWithLines (BlockContainer<DIV>.grid-item.a) [11,11 259.328125x75]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>.grid-item.b) [529.65625,11 259.328125x50]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>.grid-item.c) [270.328125,11 259.328125x25]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>.grid-item.d) [270.328125,61 518.65625x25]
          TextPaintable (TextNode<#text>)
