Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html.js> at (0,0) content-size 800x200 [BFC] children: not-inline
    BlockContainer <body> at (0,0) content-size 800x50 children: not-inline
      BlockContainer <div#page> at (50,50) content-size 750x0 children: not-inline
        BlockContainer <div#content_box> at (50,50) content-size 400x150 floating [BFC] children: inline
          BlockContainer <article.first> at (50,50) content-size 300x100 floating [BFC] children: inline
            frag 0 from TextNode start: 0, length: 5, rect: [50,50 36.03125x17] baseline: 13.296875
                "first"
            TextNode <#text>
          BlockContainer <article.second> at (50,150) content-size 200x50 floating [BFC] children: inline
            frag 0 from TextNode start: 0, length: 6, rect: [50,150 54.78125x17] baseline: 13.296875
                "second"
            TextNode <#text>
          TextNode <#text>
      BlockContainer <(anonymous)> at (0,50) content-size 800x0 children: inline
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>.js) [0,0 800x200]
    PaintableWithLines (BlockContainer<BODY>) [0,0 800x50] overflow: [0,0 800x200]
      PaintableWithLines (BlockContainer<DIV>#page) [0,0 800x50] overflow: [0,0 800x200]
        PaintableWithLines (BlockContainer<DIV>#content_box) [50,50 400x150]
          PaintableWithLines (BlockContainer<ARTICLE>.first) [50,50 300x100]
            TextPaintable (TextNode<#text>)
          PaintableWithLines (BlockContainer<ARTICLE>.second) [50,150 200x50]
            TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [0,50 800x0]
