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 [0,0] [0+0+0 800 0+0+0] [0+0+0 318 0+0+0] [BFC] children: not-inline
    BlockContainer <body> at [8,8] [8+0+0 784 0+0+8] [8+0+0 302 0+0+8] children: not-inline
      Box <div.grid-container> at [9,9] [0+1+0 300 0+1+482] [0+1+0 300 0+1+0] [GFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        Box <div.grid-item> at [20,20] flex-container(row) [0+1+10 123 10+1+0] [0+1+10 123 10+1+0] [FFC] children: not-inline
          BlockContainer <(anonymous)> at [58.140625,72.5] flex-item [0+0+0 46.71875 0+0+0] [0+0+0 18 0+0+0] [BFC] children: inline
            frag 0 from TextNode start: 0, length: 6, rect: [58.140625,72.5 46.71875x18] baseline: 13.796875
                "Item 1"
            TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        Box <div.grid-item.relative-item> at [247.5,97.5] positioned flex-container(row) [0+1+10 123 10+1+0] [0+1+10 123 10+1+0] [FFC] children: not-inline
          BlockContainer <(anonymous)> at [284.40625,150] flex-item [0+0+0 49.1875 0+0+0] [0+0+0 18 0+0+0] [BFC] children: inline
            frag 0 from TextNode start: 0, length: 6, rect: [284.40625,150 49.1875x18] baseline: 13.796875
                "Item 2"
            TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        Box <div.grid-item> at [20,175] flex-container(row) [0+1+10 123 10+1+0] [0+1+10 123 10+1+0] [FFC] children: not-inline
          BlockContainer <(anonymous)> at [56.765625,227.5] flex-item [0+0+0 49.46875 0+0+0] [0+0+0 18 0+0+0] [BFC] children: inline
            frag 0 from TextNode start: 0, length: 6, rect: [56.765625,227.5 49.46875x18] baseline: 13.796875
                "Item 3"
            TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        Box <div.grid-item> at [175,175] flex-container(row) [0+1+10 123 10+1+0] [0+1+10 123 10+1+0] [FFC] children: not-inline
          BlockContainer <(anonymous)> at [212.4375,227.5] flex-item [0+0+0 48.125 0+0+0] [0+0+0 18 0+0+0] [BFC] children: inline
            frag 0 from TextNode start: 0, length: 6, rect: [212.4375,227.5 48.125x18] baseline: 13.796875
                "Item 4"
            TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
      BlockContainer <(anonymous)> at [8,310] [0+0+0 784 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 800x318]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x302]
      PaintableBox (Box<DIV>.grid-container) [8,8 302x302] overflow: [9,9 372.5x300]
        PaintableBox (Box<DIV>.grid-item) [9,9 145x145]
          PaintableWithLines (BlockContainer(anonymous)) [58.140625,72.5 46.71875x18]
            TextPaintable (TextNode<#text>)
        PaintableBox (Box<DIV>.grid-item.relative-item) [236.5,86.5 145x145]
          PaintableWithLines (BlockContainer(anonymous)) [284.40625,150 49.1875x18]
            TextPaintable (TextNode<#text>)
        PaintableBox (Box<DIV>.grid-item) [9,164 145x145]
          PaintableWithLines (BlockContainer(anonymous)) [56.765625,227.5 49.46875x18]
            TextPaintable (TextNode<#text>)
        PaintableBox (Box<DIV>.grid-item) [164,164 145x145]
          PaintableWithLines (BlockContainer(anonymous)) [212.4375,227.5 48.125x18]
            TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [8,310 784x0]

SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x318] [children: 0] (z-index: auto)
