Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x100 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x84 children: inline
      frag 0 from BlockContainer start: 0, length: 0, rect: [9,8 200x82] baseline: 45.296875
      frag 1 from TextNode start: 0, length: 4, rect: [210,40 32.140625x17] baseline: 13.296875
          "text"
      BlockContainer <input> at (9,8) content-size 200x82 inline-block [BFC] children: not-inline
        Box <div> at (11,9) content-size 196x80 flex-container(row) [FFC] children: not-inline
          BlockContainer <div> at (11,40.5) content-size 98x17 flex-item [BFC] children: inline
            frag 0 from TextNode start: 0, length: 11, rect: [11,40.5 89.90625x17] baseline: 13.296875
                "placeholder"
            TextNode <#text>
          BlockContainer <div> at (109,9) content-size 98x80 flex-item [BFC] children: inline
            TextNode <#text>
      TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x100]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x84]
      PaintableWithLines (BlockContainer<INPUT>) [8,7 202x84]
        PaintableBox (Box<DIV>) [9,8 200x82]
          PaintableWithLines (BlockContainer<DIV>) [11,40.5 98x17]
            TextPaintable (TextNode<#text>)
          PaintableWithLines (BlockContainer<DIV>) [109,9 98x80]
      TextPaintable (TextNode<#text>)
