Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (1,1) content-size 798x600 [BFC] children: not-inline
    BlockContainer <body> at (10,10) content-size 780x104 children: not-inline
      Box <div.grid-container> at (11,11) content-size 778x102 [GFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text>
        BlockContainer <div.grid-item.item-1> at (271.328125,12) content-size 100x100 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [271.328125,12 7.9375x22] baseline: 17
              "1"
          TextNode <#text>
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text>
        BlockContainer <div.grid-item.item-2> at (530.65625,12) content-size 100x100 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [530.65625,12 11.015625x22] baseline: 17
              "2"
          TextNode <#text>
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text>
        BlockContainer <div.grid-item.item-3> at (12,12) content-size 100x100 [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [12,12 11.375x22] baseline: 17
              "3"
          TextNode <#text>
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text>
      BlockContainer <(anonymous)> at (10,114) content-size 780x0 children: inline
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600] overflow: [0,0 800x602]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x602]
    PaintableWithLines (BlockContainer<BODY>) [9,9 782x106]
      PaintableBox (Box<DIV>.grid-container) [10,10 780x104]
        PaintableWithLines (BlockContainer<DIV>.grid-item.item-1) [270.328125,11 102x102]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>.grid-item.item-2) [529.65625,11 102x102]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>.grid-item.item-3) [11,11 102x102]
          TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [10,114 780x0]
