Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x252 children: not-inline
      Box <div.container.column> at (9,9) content-size 250x250 flex-container(column) [FFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text>
        BlockContainer <div.box> at (10,10) content-size 100x100 flex-item [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [10,10 6.34375x17] baseline: 13.296875
              "1"
          TextNode <#text>
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text>
        BlockContainer <div.box> at (10,112) content-size 100x100 flex-item [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [10,112 8.8125x17] baseline: 13.296875
              "2"
          TextNode <#text>
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text>
        BlockContainer <div.box> at (135,10) content-size 100x100 flex-item [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [135,10 9.09375x17] baseline: 13.296875
              "3"
          TextNode <#text>
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text>
      BlockContainer <(anonymous)> at (8,260) content-size 784x0 children: inline
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x252]
      PaintableBox (Box<DIV>.container.column) [8,8 252x252]
        PaintableWithLines (BlockContainer<DIV>.box) [9,9 102x102]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>.box) [9,111 102x102]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>.box) [134,9 102x102]
          TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [8,260 784x0]
