Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (1,1) content-size 798x0 [BFC] children: not-inline
    BlockContainer <body> at (9,9) content-size 500x400 positioned [BFC] children: inline
      BlockContainer <div.two-props> at (60,110) content-size 398x198 positioned [BFC] children: not-inline
      BlockContainer <div.four-props> at (110,210) content-size 248x148 positioned [BFC] children: not-inline
      TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x2]
    PaintableWithLines (BlockContainer<BODY>) [8,8 502x402]
      PaintableWithLines (BlockContainer<DIV>.two-props) [59,109 400x200]
      PaintableWithLines (BlockContainer<DIV>.four-props) [109,209 250x150]
