Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (1,1) content-size 798x520 [BFC] children: not-inline
    BlockContainer <body> at (10,10) content-size 780x502 children: not-inline
      Box <div.grid> at (11,11) content-size 500x500 [GFC] children: not-inline
        BlockContainer <div#a> at (12,12) content-size 98x106 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [12,12 6.34375x18] baseline: 13.796875
              "1"
          TextNode <#text>
        BlockContainer <div#b> at (12,120) content-size 498x282 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [12,120 8.8125x18] baseline: 13.796875
              "2"
          TextNode <#text>
        BlockContainer <div#c> at (12,404) content-size 98x106 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [12,404 9.09375x18] baseline: 13.796875
              "3"
          TextNode <#text>
        BlockContainer <div#d> at (112,404) content-size 98x106 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [112,404 7.75x18] baseline: 13.796875
              "4"
          TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x522]
    PaintableWithLines (BlockContainer<BODY>) [9,9 782x504]
      PaintableBox (Box<DIV>.grid) [10,10 502x502]
        PaintableWithLines (BlockContainer<DIV>#a) [11,11 100x108]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>#b) [11,119 500x284]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>#c) [11,403 100x108]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>#d) [111,403 100x108]
          TextPaintable (TextNode<#text>)
