Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x17 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x1 children: not-inline
      BlockContainer <div> at (8,8) content-size 784x1 children: inline
        frag 0 from TextNode start: 0, length: 21, rect: [8,8 0x1] baseline: 0.796875
            "should not be visible"
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x17]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x1]
      PaintableWithLines (BlockContainer<DIV>) [8,8 784x1]
        TextPaintable (TextNode<#text>)
