Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] children: not-inline
  BlockContainer <html> at [0,0] [0+0+0 800 0+0+0] [0+0+0 416 0+0+0] [BFC] children: not-inline
    BlockContainer <body> at [8,8] [8+0+0 784 0+0+8] [8+0+0 400 0+0+8] children: not-inline
      Box <div.flex.row> at [8,8] flex-container(row-reverse) [0+0+0 200 0+0+584] [0+0+0 200 0+0+0] [FFC] children: not-inline
        BlockContainer <div.item> at [108,8] flex-item [0+0+0 100 0+0+0] [0+0+0 100 0+0+0] [BFC] children: not-inline
      Box <div.flex.column> at [8,208] flex-container(column-reverse) [0+0+0 200 0+0+584] [0+0+0 200 0+0+0] [FFC] children: not-inline
        BlockContainer <div.item> at [8,308] flex-item [0+0+0 100 0+0+0] [0+0+0 100 0+0+0] [BFC] children: not-inline

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x416]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x400]
      PaintableBox (Box<DIV>.flex.row) [8,8 200x200]
        PaintableWithLines (BlockContainer<DIV>.item) [108,8 100x100]
      PaintableBox (Box<DIV>.flex.column) [8,208 200x200]
        PaintableWithLines (BlockContainer<DIV>.item) [8,308 100x100]

SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x416] [children: 0] (z-index: auto)
