Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x126 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x110 children: not-inline
      BlockContainer <div> at (8,8) content-size 784x55 children: inline
        frag 0 from TextNode start: 0, length: 5, rect: [8,8 121.359375x55] baseline: 41.890625
            "12345"
        TextNode <#text>
      BlockContainer <(anonymous)> at (8,63) content-size 784x0 children: inline
        TextNode <#text>
      BlockContainer <div> at (8,63) content-size 784x55 children: inline
        frag 0 from TextNode start: 0, length: 1, rect: [93.0625,63 28.03125x55] baseline: 41.890625
            "a"
        BlockContainer <span> at (8,63) content-size 85.0625x55 floating [BFC] children: inline
          frag 0 from TextNode start: 0, length: 2, rect: [8,63 85.0625x55] baseline: 41.890625
              "aa"
          TextNode <#text>
        TextNode <#text>
      BlockContainer <(anonymous)> at (8,118) content-size 784x0 children: inline
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x126]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x110]
      PaintableWithLines (BlockContainer<DIV>) [8,8 784x55]
        TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [8,63 784x0]
      PaintableWithLines (BlockContainer<DIV>) [8,63 784x55]
        PaintableWithLines (BlockContainer<SPAN>) [8,63 85.0625x55]
          TextPaintable (TextNode<#text>)
        TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [8,118 784x0]
