Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x33 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x17 children: inline
      frag 0 from TextNode start: 0, length: 1, rect: [737,8 8x17] baseline: 13.296875
          " "
      InlineNode <span>
        frag 0 from TextNode start: 0, length: 5, rect: [690,8 46.71875x17] baseline: 13.296875
            "aaaaa"
        TextNode <#text>
      TextNode <#text>
      InlineNode <span>
        frag 0 from TextNode start: 0, length: 5, rect: [745,8 47.34375x17] baseline: 13.296875
            "bbbbb"
        TextNode <#text>
      TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x33]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x17]
      PaintableWithLines (InlineNode<SPAN>)
        TextPaintable (TextNode<#text>)
      TextPaintable (TextNode<#text>)
      PaintableWithLines (InlineNode<SPAN>)
        TextPaintable (TextNode<#text>)
