Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x34 [BFC] children: not-inline
    Box <body> at (8,8) content-size 784x18 [GFC] children: not-inline
      BlockContainer <main> at (150,8) content-size 500x18 [BFC] children: not-inline
        BlockContainer <div#item> at (150,8) content-size 500x18 children: inline
          frag 0 from TextNode start: 0, length: 11, rect: [150,8 105.953125x18] baseline: 13.796875
              "Smartphones"
          TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x34]
    PaintableBox (Box<BODY>) [8,8 784x18]
      PaintableWithLines (BlockContainer<MAIN>) [150,8 500x18]
        PaintableWithLines (BlockContainer<DIV>#item) [150,8 500x18]
          TextPaintable (TextNode<#text>)
