Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x21.46875 children: inline
      line 0 width: 120, height: 21.46875, bottom: 21.46875, baseline: 13.53125
        frag 0 from BlockContainer start: 0, length: 0, rect: [9,9 118x19.46875]
      BlockContainer <input#foo> at (9,9) content-size 118x19.46875 inline-block [BFC] children: not-inline
        Box <div> at (11,10) content-size 114x17.46875 flex-container(row) [FFC] children: not-inline
          BlockContainer <div> at (11,10) content-size 49.734375x17.46875 flex-item [BFC] children: inline
            line 0 width: 49.734375, height: 17.46875, bottom: 17.46875, baseline: 13.53125
              frag 0 from TextNode start: 0, length: 4, rect: [11,10 49.734375x17.46875]
                "PASS"
            TextNode <#text>
      TextNode <#text>
      TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x21.46875]
      PaintableWithLines (BlockContainer<INPUT>#foo) [8,8 120x21.46875]
        PaintableBox (Box<DIV>) [9,9 118x19.46875]
          PaintableWithLines (BlockContainer<DIV>) [11,10 49.734375x17.46875]
            TextPaintable (TextNode<#text>)
