Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] [BFC] children: not-inline
  BlockContainer <html> at [0,0] [0+0+0 800 0+0+0] [0+0+0 52 0+0+0] [BFC] children: not-inline
    BlockContainer <body> at [8,8] [8+0+0 784 0+0+8] [8+0+0 36 0+0+8] children: inline
      frag 0 from TextInputBox start: 0, length: 0, rect: [12,22 60x8] baseline: 21
      TextInputBox <input> at [12,22] inline-block [0+4+0 60 0+4+0] [0+4+10 8 10+4+0] [BFC] children: not-inline
        Box <div> at [14,23] flex-container(row) [0+0+2 56 2+0+0] [0+0+1 6 1+0+0] [FFC] children: not-inline
          BlockContainer <div> at [14,23] flex-item [0+0+0 56 0+0+0] [0+0+0 6 0+0+0] [BFC] children: inline
            frag 0 from TextNode start: 0, length: 0, rect: [14,23 0x6] baseline: 4.5
            TextNode <#text> (not painted)
      TextNode <#text> (not painted)

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x52]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x36]
      PaintableWithLines (TextInputBox<INPUT>) [8,8 68x36]
        PaintableBox (Box<DIV>) [12,22 60x8]
          PaintableWithLines (BlockContainer<DIV>) [14,23 56x6]
            TextPaintable (TextNode<#text>)

SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x52] [children: 0] (z-index: auto)
