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+0 166 0+0+0] [BFC] children: not-inline
    BlockContainer <body> at [8,8] [8+0+0 784 0+0+8] [8+0+0 150 0+0+8] children: not-inline
      BlockContainer <div.a> at [8,8] [0+0+0 784 0+0+0] [0+0+0 50 0+0+0] children: not-inline
      BlockContainer <(anonymous)> at [8,58] [0+0+0 784 0+0+0] [0+0+0 0 0+0+0] children: inline
        TextNode <#text> (not painted)
        BlockContainer <div.b> at [742,58] floating [0+0+0 50 0+0+0] [0+0+0 50 0+0+0] [BFC] children: not-inline
        TextNode <#text> (not painted)
        BlockContainer <div.c> at [8,108] floating [0+0+0 0 0+0+0] [0+0+0 0 0+0+0] [BFC] children: not-inline
        TextNode <#text> (not painted)
      BlockContainer <div.d> at [8,108] [0+0+0 784 0+0+0] [0+0+0 50 0+0+0] children: not-inline
      BlockContainer <(anonymous)> at [8,158] [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 800x166]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x150]
      PaintableWithLines (BlockContainer<DIV>.a) [8,8 784x50]
      PaintableWithLines (BlockContainer(anonymous)) [8,58 784x0]
        PaintableWithLines (BlockContainer<DIV>.b) [742,58 50x50]
        PaintableWithLines (BlockContainer<DIV>.c) [8,108 0x0]
      PaintableWithLines (BlockContainer<DIV>.d) [8,108 784x50]
      PaintableWithLines (BlockContainer(anonymous)) [8,158 784x0]

SC for Viewport<#document> [0,0 800x600] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x166] (z-index: auto)
