Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x120 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x104 children: not-inline
      Box <div.container> at (9,9) content-size 500x102 flex-container(row) [FFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text>
        BlockContainer <div.box> at (10,10) content-size 47x100 flex-item [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [10,10 6.34375x18] baseline: 13.796875
              "1"
          TextNode <#text>
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text>
        BlockContainer <div.box> at (59,10) content-size 164.671875x100 flex-item [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [59,10 8.8125x18] baseline: 13.796875
              "2"
          TextNode <#text>
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text>
        BlockContainer <div.box> at (225.671875,10) content-size 282.328125x100 flex-item [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [225.671875,10 9.09375x18] baseline: 13.796875
              "3"
          TextNode <#text>
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text>
      BlockContainer <(anonymous)> at (8,112) content-size 784x0 children: inline
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x120]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x104]
      PaintableBox (Box<DIV>.container) [8,8 502x104]
        PaintableWithLines (BlockContainer<DIV>.box) [9,9 49x102]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>.box) [58,9 166.671875x102]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>.box) [224.671875,9 284.328125x102]
          TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [8,112 784x0]
