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 48 0+0+0] [BFC] children: not-inline
    BlockContainer <body> at [8,8] [8+0+0 784 0+0+8] [8+0+0 32 0+0+8] children: not-inline
      Box <div.row> at [8,8] flex-container(row) [0+0+0 784 0+0+0] [0+0+0 32 0+0+0] [FFC] children: not-inline
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
        Box <div.column> at [8,8] flex-container(column) flex-item [0+0+0 32 0+0+0] [0+0+0 32 0+0+0] [FFC] children: not-inline
          BlockContainer <(anonymous)> (not painted) [BFC] children: inline
            TextNode <#text> (not painted)
          ImageBox <img> at [8,8] flex-item [0+0+0 32 0+0+0] [0+0+0 32 0+0+0] children: not-inline
          BlockContainer <(anonymous)> (not painted) [BFC] children: inline
            TextNode <#text> (not painted)
        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
          TextNode <#text> (not painted)
      BlockContainer <(anonymous)> at [8,40] [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 800x48]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x32]
      Paintable (Box<DIV>.row) [8,8 784x32]
        Paintable (Box<DIV>.column) [8,8 32x32]
          ImagePaintable (ImageBox<IMG>) [8,8 32x32]
      PaintableWithLines (BlockContainer(anonymous)) [8,40 784x0]

SC for Viewport<#document> [0,0 800x600] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x48] (z-index: auto)
