Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] children: not-inline
  BlockContainer <html> at [1,1] [0+1+0 798 0+1+0] [0+1+0 122 0+1+0] [BFC] children: not-inline
    BlockContainer <body> at [10,10] [8+1+0 780 0+1+8] [8+1+0 104 0+1+8] children: not-inline
      Box <div.grid-container> at [11,11] [0+1+0 778 0+1+0] [0+1+0 102 0+1+0] [GFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.grid-item.item-1> at [271.328125,12] [0+1+0 100 0+1+0] [0+1+0 100 0+1+0] [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [271.328125,12 7.9375x23] baseline: 17.5
              "1"
          TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.grid-item.item-2> at [530.65625,12] [0+1+0 100 0+1+0] [0+1+0 100 0+1+0] [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [530.65625,12 11.015625x23] baseline: 17.5
              "2"
          TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.grid-item.item-3> at [12,12] [0+1+0 100 0+1+0] [0+1+0 100 0+1+0] [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [12,12 11.375x23] baseline: 17.5
              "3"
          TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
      BlockContainer <(anonymous)> at [10,114] [0+0+0 780 0+0+0] [0+0+0 0 0+0+0] children: inline
        TextNode <#text> (not painted)

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x124]
    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]

SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
 SC for BlockContainer<HTML> [1,1 798x122] [children: 0] (z-index: auto)
