Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x113 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x97 children: inline
      frag 0 from BlockContainer start: 0, length: 0, rect: [48,48 54.109375x17] baseline: 53.296875
      BlockContainer <div> at (48,48) content-size 54.109375x17 inline-block [BFC] children: inline
        frag 0 from TextNode start: 0, length: 6, rect: [48,48 54.109375x17] baseline: 13.296875
            "New UI"
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x113]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x97]
      PaintableWithLines (BlockContainer<DIV>) [8,8 134.109375x97]
        TextPaintable (TextNode<#text>)
