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+0 116 0+0+0] [BFC] children: not-inline
    BlockContainer <body> at [8,8] [8+0+0 784 0+0+8] [8+0+0 100 0+0+8] children: not-inline
      BlockContainer <div#containing-block> at [8,8] [0+0+0 200 0+0+584] [0+0+0 100 0+0+0] children: not-inline
        BlockContainer <(anonymous)> at [8,8] [0+0+0 200 0+0+0] [0+0+0 0 0+0+0] children: inline
          TextNode <#text> (not painted)
        Box <div#inner-flex> at [8,8] flex-container(row) [0+0+0 200 0+0+0] [0+0+0 0 0+0+0] [FFC] children: not-inline
          BlockContainer <(anonymous)> (not painted) [BFC] children: inline
            TextNode <#text> (not painted)
          BlockContainer <div> at [83,8] positioned [0+0+0 50 0+0+0] [0+0+0 100 0+0+0] [BFC] children: not-inline
            BlockContainer <(anonymous)> at [83,8] [0+0+0 50 0+0+0] [0+0+0 0 0+0+0] children: inline
              TextNode <#text> (not painted)
            BlockContainer <span> at [83,8] [0+0+0 50 0+0+0] [0+0+0 0 0+0+0] children: not-inline
            BlockContainer <(anonymous)> at [83,8] [0+0+0 50 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 <(anonymous)> at [8,8] [0+0+0 200 0+0+0] [0+0+0 0 0+0+0] children: inline
          TextNode <#text> (not painted)
      BlockContainer <(anonymous)> at [8,108] [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 800x116]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x100]
      PaintableWithLines (BlockContainer<DIV>#containing-block) [8,8 200x100]
        PaintableWithLines (BlockContainer(anonymous)) [8,8 200x0]
        PaintableBox (Box<DIV>#inner-flex) [8,8 200x0]
          PaintableWithLines (BlockContainer<DIV>) [83,8 50x100]
            PaintableWithLines (BlockContainer(anonymous)) [83,8 50x0]
            PaintableWithLines (BlockContainer<SPAN>) [83,8 50x0]
            PaintableWithLines (BlockContainer(anonymous)) [83,8 50x0]
        PaintableWithLines (BlockContainer(anonymous)) [8,8 200x0]
      PaintableWithLines (BlockContainer(anonymous)) [8,108 784x0]

SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x116] [children: 0] (z-index: auto)
