Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x36 children: not-inline
      BlockContainer <div.fixed_width> at (9,9) content-size 50x34 children: inline
        TextNode <#text>
        InlineNode <span.nowrap>
          frag 0 from TextNode start: 0, length: 3, rect: [9,9 33.921875x17] baseline: 13.296875
              "ABC"
          TextNode <#text>
        InlineNode <span>
          TextNode <#text>
        InlineNode <span.nowrap>
          frag 0 from TextNode start: 0, length: 3, rect: [9,26 33.921875x17] baseline: 13.296875
              "ABC"
          TextNode <#text>
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x36]
      PaintableWithLines (BlockContainer<DIV>.fixed_width) [8,8 52x36]
        PaintableWithLines (InlineNode<SPAN>.nowrap)
          TextPaintable (TextNode<#text>)
        PaintableWithLines (InlineNode<SPAN>)
        PaintableWithLines (InlineNode<SPAN>.nowrap)
          TextPaintable (TextNode<#text>)
