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+0 114 0+0+0] [BFC] children: not-inline
    BlockContainer <body> at [0,0] [0+0+0 800 0+0+0] [0+0+0 114 0+0+0] children: not-inline
      Box <div.container> at [1,1] flex-container(row) [0+1+0 500 0+1+298] [0+1+0 18 0+1+0] [FFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.item> at [2,2] flex-item [0+1+0 50 0+1+0] [0+1+0 16 0+1+0] [BFC] children: inline
          frag 0 from TextNode start: 0, length: 24, rect: [2,2 222.6875x16] baseline: 12.796875
              "LongWordThatExceedsWidth"
          TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.item> at [54,2] flex-item [0+1+0 100 0+1+0] [0+1+0 16 0+1+0] [BFC] children: inline
          frag 0 from TextNode start: 0, length: 5, rect: [54,2 47.3125x16] baseline: 12.796875
              "Short"
          TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
      BlockContainer <(anonymous)> at [0,20] [0+0+0 800 0+0+0] [0+0+0 0 0+0+0] children: inline
        TextNode <#text> (not painted)
      Box <div.container> at [1,31] flex-container(row) [0+1+0 500 0+1+298] [10+1+0 52 0+1+0] [FFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.item> at [2,32] flex-item [0+1+0 150 0+1+0] [0+1+0 50 0+1+0] [BFC] children: not-inline
          BlockContainer <(anonymous)> at [2,32] [0+0+0 150 0+0+0] [0+0+0 0 0+0+0] children: inline
            TextNode <#text> (not painted)
          BlockContainer <div> at [2,32] [0+0+0 150 0+0+0] [0+0+0 30 0+0+0] children: not-inline
          BlockContainer <(anonymous)> at [2,62] [0+0+0 150 0+0+0] [0+0+0 0 0+0+0] children: inline
            TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.item> at [154,32] flex-item [0+1+0 100 0+1+0] [0+1+0 50 0+1+0] [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [154,32 9.34375x16] baseline: 12.796875
              "B"
          TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
      BlockContainer <(anonymous)> at [0,84] [0+0+0 800 0+0+0] [0+0+0 0 0+0+0] children: inline
        TextNode <#text> (not painted)
      Box <div.container> at [1,95] flex-container(row) [0+1+0 500 0+1+298] [10+1+0 18 0+1+0] [FFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.item> at [2,96] flex-item [0+1+0 165.328125 0+1+0] [0+1+0 16 0+1+0] [BFC] children: inline
          frag 0 from TextNode start: 0, length: 6, rect: [2,96 49.546875x16] baseline: 12.796875
              "Flex 1"
          TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        BlockContainer <div.item> at [169.328125,96] flex-item [0+1+0 330.671875 0+1+0] [0+1+0 16 0+1+0] [BFC] children: inline
          frag 0 from TextNode start: 0, length: 6, rect: [169.328125,96 52.015625x16] baseline: 12.796875
              "Flex 2"
          TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
      BlockContainer <(anonymous)> at [0,114] [0+0+0 800 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 800x114]
    PaintableWithLines (BlockContainer<BODY>) [0,0 800x114]
      Paintable (Box<DIV>.container) [0,0 502x20]
        PaintableWithLines (BlockContainer<DIV>.item) [1,1 52x18]
        PaintableWithLines (BlockContainer<DIV>.item) [53,1 102x18]
      PaintableWithLines (BlockContainer(anonymous)) [0,20 800x0]
      Paintable (Box<DIV>.container) [0,30 502x54]
        PaintableWithLines (BlockContainer<DIV>.item) [1,31 152x52]
          PaintableWithLines (BlockContainer(anonymous)) [2,32 150x0]
          PaintableWithLines (BlockContainer<DIV>) [2,32 150x30]
          PaintableWithLines (BlockContainer(anonymous)) [2,62 150x0]
        PaintableWithLines (BlockContainer<DIV>.item) [153,31 102x52]
      PaintableWithLines (BlockContainer(anonymous)) [0,84 800x0]
      Paintable (Box<DIV>.container) [0,94 502x20]
        PaintableWithLines (BlockContainer<DIV>.item) [1,95 167.328125x18]
        PaintableWithLines (BlockContainer<DIV>.item) [168.328125,95 332.671875x18]
      PaintableWithLines (BlockContainer(anonymous)) [0,114 800x0]

SC for Viewport<#document> [0,0 800x600] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x114] (z-index: auto)
