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 20 0+0+0] [BFC] children: not-inline
    BlockContainer <body> at [0,0] [0+0+0 800 0+0+0] [0+0+0 20 0+0+0] children: not-inline
      BlockContainer <div> at [0,0] positioned [0+0+0 800 0+0+0] [0+0+0 20 0+0+0] children: inline
        InlineNode <span> at [0,5] [0+0+0 40 0+0+0] [0+0+0 10 0+0+0]
          frag 0 from TextNode start: 0, length: 4, rect: [0,5 40x10] baseline: 8
              "text"
          TextNode <#text> (not painted)
        BlockContainer <(anonymous)> at [40,0] positioned [0+0+0 10 0+0+0] [0+0+0 20 0+0+0] [BFC] children: inline
          frag 0 from GeneratedTextNode start: 0, length: 1, rect: [40,5 10x10] baseline: 8
              "X"
          GeneratedTextNode <(anonymous)> (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)

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x20]
    PaintableWithLines (BlockContainer<BODY>) [0,0 800x20]
      PaintableWithLines (BlockContainer<DIV>) [0,0 800x20]
        InlinePaintable (InlineNode<SPAN>) [0,5 40x10]
        PaintableWithLines (BlockContainer(anonymous)) [40,0 10x20]
      PaintableWithLines (BlockContainer(anonymous)) [0,20 800x0]

SC for Viewport<#document> [0,0 800x600] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x20] (z-index: auto)
