Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x616 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x600 children: not-inline
      BlockContainer <div.container> at (8,108) content-size 784x500 children: not-inline
        BlockContainer <div.hmm> at (18,118) content-size 764x250 children: inline
          frag 0 from TextNode start: 0, length: 5, rect: [18,118 36.84375x18] baseline: 13.796875
              "hello"
          TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600] overflow: [0,0 800x616]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x616]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x600]
      PaintableWithLines (BlockContainer<DIV>.container) [8,8 784x600]
        PaintableWithLines (BlockContainer<DIV>.hmm) [8,108 784x270]
          TextPaintable (TextNode<#text>)
