Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x84 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x68 children: not-inline
      BlockContainer <input#a> at (9,9) content-size 200x20 [BFC] children: not-inline
        Box <div> at (11,10) content-size 196x18 flex-container(row) [FFC] children: not-inline
          BlockContainer <div> at (11,10) content-size 196x18 flex-item [BFC] children: inline
            frag 0 from TextNode start: 0, length: 11, rect: [11,10 91.953125x18] baseline: 13.796875
                "Hello World"
            TextNode <#text>
      BlockContainer <(anonymous)> at (8,30) content-size 784x0 children: inline
        TextNode <#text>
      BlockContainer <input#b> at (9,31) content-size 200x16 [BFC] children: not-inline
        Box <div> at (11,32) content-size 196x16 flex-container(row) [FFC] children: not-inline
          BlockContainer <div> at (11,40) content-size 196x0 flex-item [BFC] children: inline
            frag 0 from TextNode start: 0, length: 11, rect: [11,40 91.953125x0] baseline: 4.796875
                "Hello World"
            TextNode <#text>
      BlockContainer <(anonymous)> at (8,48) content-size 784x0 children: inline
        TextNode <#text>
      BlockContainer <input#c> at (9,49) content-size 200x26 [BFC] children: not-inline
        Box <div> at (11,50) content-size 196x24 flex-container(row) [FFC] children: not-inline
          BlockContainer <div> at (11,50) content-size 196x24 flex-item [BFC] children: inline
            frag 0 from TextNode start: 0, length: 11, rect: [11,50 91.953125x24] baseline: 16.796875
                "Hello World"
            TextNode <#text>
      BlockContainer <(anonymous)> at (8,76) content-size 784x0 children: inline
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x84]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x68]
      PaintableWithLines (BlockContainer<INPUT>#a) [8,8 202x22]
        PaintableBox (Box<DIV>) [9,9 200x20]
          PaintableWithLines (BlockContainer<DIV>) [11,10 196x18]
            TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [8,30 784x0]
      PaintableWithLines (BlockContainer<INPUT>#b) [8,30 202x18] overflow: [9,31 200x18]
        PaintableBox (Box<DIV>) [9,31 200x18]
          PaintableWithLines (BlockContainer<DIV>) [11,40 196x0]
            TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [8,48 784x0]
      PaintableWithLines (BlockContainer<INPUT>#c) [8,48 202x28]
        PaintableBox (Box<DIV>) [9,49 200x26]
          PaintableWithLines (BlockContainer<DIV>) [11,50 196x24]
            TextPaintable (TextNode<#text>)
      PaintableWithLines (BlockContainer(anonymous)) [8,76 784x0]
