Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] [BFC] children: not-inline
  BlockContainer <html> at [0,0] [0+0+0 800 0+0+0] [0+0+0 88 0+0+0] [BFC] children: not-inline
    Box <body> at [8,8] flex-container(column) [8+0+0 400 0+0+392] [8+0+0 72 0+0+8] [FFC] children: not-inline
      BlockContainer <div> at [8,8] flex-item [0+0+0 40 0+0+0] [0+0+0 54 0+0+0] [BFC] children: inline
        frag 0 from TextNode start: 0, length: 3, rect: [8,8 27.15625x18] baseline: 13.796875
            "foo"
        frag 1 from TextNode start: 4, length: 3, rect: [8,26 27.640625x18] baseline: 13.796875
            "bar"
        frag 2 from TextNode start: 8, length: 3, rect: [8,44 27.203125x18] baseline: 13.796875
            "baz"
        TextNode <#text> (not painted)
      BlockContainer <(anonymous)> at [8,62] flex-item [0+0+0 400 0+0+0] [0+0+0 18 0+0+0] [BFC] children: inline
        frag 0 from TextNode start: 0, length: 3, rect: [8,62 24.25x18] baseline: 13.796875
            "123"
        TextNode <#text> (not painted)

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x88]
    PaintableBox (Box<BODY>) [8,8 400x72]
      PaintableWithLines (BlockContainer<DIV>) [8,8 40x54]
        TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [8,62 400x18]
        TextPaintable (TextNode<#text>)

SC for Viewport<#document> [0,0 800x600] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x88] (z-index: auto)
