Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x116 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x100 children: not-inline
      BlockContainer <div#containing-block> at (8,8) content-size 200x100 children: not-inline
        BlockContainer <(anonymous)> at (8,8) content-size 200x0 children: inline
          TextNode <#text>
        Box <div#inner-flex> at (8,8) content-size 200x0 flex-container(row) [FFC] children: not-inline
          BlockContainer <(anonymous)> (not painted) [BFC] children: inline
            TextNode <#text>
          BlockContainer <div> at (83,8) content-size 50x100 positioned [BFC] children: not-inline
            BlockContainer <(anonymous)> at (83,8) content-size 50x0 children: inline
              TextNode <#text>
            BlockContainer <span> at (83,8) content-size 50x0 children: not-inline
            BlockContainer <(anonymous)> at (83,8) content-size 50x0 children: inline
              TextNode <#text>
          BlockContainer <(anonymous)> (not painted) [BFC] children: inline
            TextNode <#text>
        BlockContainer <(anonymous)> at (8,8) content-size 200x0 children: inline
          TextNode <#text>
      BlockContainer <(anonymous)> at (8,108) content-size 784x0 children: inline
        TextNode <#text>

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]
