Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (1,1) content-size 798x128 [BFC] children: not-inline
    BlockContainer <body> at (10,10) content-size 780x110 children: not-inline
      BlockContainer <(anonymous)> at (10,10) content-size 780x0 children: inline
        TextNode <#text>
      Box <div.grid.start> at (11,11) content-size 778x20 [GFC] children: not-inline
        BlockContainer <div> at (12,12) content-size 43.859375x18 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 5, rect: [12,12 43.859375x18] baseline: 13.796875
              "Start"
          TextNode <#text>
      BlockContainer <(anonymous)> at (10,32) content-size 780x0 children: inline
        TextNode <#text>
      Box <div.grid.center> at (11,33) content-size 778x20 [GFC] children: not-inline
        BlockContainer <div> at (373.46875,34) content-size 53.046875x18 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 6, rect: [373.46875,34 53.046875x18] baseline: 13.796875
              "Center"
          TextNode <#text>
      BlockContainer <(anonymous)> at (10,54) content-size 780x0 children: inline
        TextNode <#text>
      Box <div.grid.end> at (11,55) content-size 778x20 [GFC] children: not-inline
        BlockContainer <div> at (758.671875,56) content-size 29.328125x18 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 3, rect: [758.671875,56 29.328125x18] baseline: 13.796875
              "End"
          TextNode <#text>
      BlockContainer <(anonymous)> at (10,76) content-size 780x0 children: inline
        TextNode <#text>
      Box <div.grid.left> at (11,77) content-size 778x20 [GFC] children: not-inline
        BlockContainer <div> at (12,78) content-size 32.875x18 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 4, rect: [12,78 32.875x18] baseline: 13.796875
              "Left"
          TextNode <#text>
      BlockContainer <(anonymous)> at (10,98) content-size 780x0 children: inline
        TextNode <#text>
      Box <div.grid.right> at (11,99) content-size 778x20 [GFC] children: not-inline
        BlockContainer <div> at (746.03125,100) content-size 41.96875x18 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 5, rect: [746.03125,100 41.96875x18] baseline: 13.796875
              "Right"
          TextNode <#text>
      BlockContainer <(anonymous)> at (10,120) content-size 780x0 children: inline
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x130]
    PaintableWithLines (BlockContainer<BODY>) [9,9 782x112]
      PaintableWithLines (BlockContainer(anonymous)) [10,10 780x0]
      PaintableBox (Box<DIV>.grid.start) [10,10 780x22]
        PaintableWithLines (BlockContainer<DIV>) [11,11 45.859375x20]
          TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [10,32 780x0]
      PaintableBox (Box<DIV>.grid.center) [10,32 780x22]
        PaintableWithLines (BlockContainer<DIV>) [372.46875,33 55.046875x20]
          TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [10,54 780x0]
      PaintableBox (Box<DIV>.grid.end) [10,54 780x22]
        PaintableWithLines (BlockContainer<DIV>) [757.671875,55 31.328125x20]
          TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [10,76 780x0]
      PaintableBox (Box<DIV>.grid.left) [10,76 780x22]
        PaintableWithLines (BlockContainer<DIV>) [11,77 34.875x20]
          TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [10,98 780x0]
      PaintableBox (Box<DIV>.grid.right) [10,98 780x22]
        PaintableWithLines (BlockContainer<DIV>) [745.03125,99 43.96875x20]
          TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [10,120 780x0]
