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 [1,1] [0+1+0 798 0+1+0] [0+1+0 18 0+1+0] [BFC] children: not-inline
    BlockContainer <body> at [10,10] [8+1+0 780 0+1+8] [8+1+0 0 0+1+8] children: inline
      TextNode <#text> (not painted)
      BlockContainer <div.only-t-l> at [6,6] positioned [0+1+0 10 0+1+0] [0+1+0 10 0+1+0] [BFC] children: not-inline
      TextNode <#text> (not painted)
      BlockContainer <div.only-mt-ml> at [16,16] positioned [5+1+0 10 0+1+5] [5+1+0 10 0+1+5] [BFC] children: not-inline
      TextNode <#text> (not painted)
      BlockContainer <div.both> at [11,11] positioned [5+1+0 10 0+1+5] [5+1+0 10 0+1+5] [BFC] children: not-inline
      TextNode <#text> (not painted)

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x20]
    PaintableWithLines (BlockContainer<BODY>) [9,9 782x2]
      PaintableWithLines (BlockContainer<DIV>.only-t-l) [5,5 12x12]
      PaintableWithLines (BlockContainer<DIV>.only-mt-ml) [15,15 12x12]
      PaintableWithLines (BlockContainer<DIV>.both) [10,10 12x12]

SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
 SC for BlockContainer<HTML> [1,1 798x18] [children: 0] (z-index: auto)
