Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x54 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x38 children: not-inline
      Box <div#flex-container> at (18,18) content-size 764x18 flex-container(row) [FFC] children: not-inline
        BlockContainer <div#absolute> at (18,18) content-size 50x50 positioned [BFC] children: not-inline
          BlockContainer <div#orange> at (18,18) content-size 50x50 children: not-inline
        BlockContainer <div#red> at (18,18) content-size 9.703125x18 flex-item [BFC] children: inline
          frag 0 from TextNode start: 0, length: 1, rect: [18,18 9.703125x18] baseline: 13.796875
              "x"
          TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x54]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x38]
      PaintableBox (Box<DIV>#flex-container) [8,8 784x38]
        PaintableWithLines (BlockContainer<DIV>#absolute) [18,18 50x50]
          PaintableWithLines (BlockContainer<DIV>#orange) [18,18 50x50]
        PaintableWithLines (BlockContainer<DIV>#red) [18,18 9.703125x18]
          TextPaintable (TextNode<#text>)
