Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (1,1) content-size 798x80 [BFC] children: not-inline
    BlockContainer <body> at (10,10) content-size 780x62 children: not-inline
      Box <div.flex-container> at (11,11) content-size 778x60 flex-container(row) [FFC] children: not-inline
        BlockContainer <div.flex-item> at (12,12) content-size 386x28 flex-item [BFC] children: inline
          frag 0 from TextNode start: 0, length: 6, rect: [12,12 58.421875x23] baseline: 17.5
              "Item 1"
          TextNode <#text>
        BlockContainer <div.flex-item> at (401,12) content-size 386x28 flex-item [BFC] children: inline
          frag 0 from TextNode start: 0, length: 6, rect: [401,12 61.5x23] baseline: 17.5
              "Item 2"
          TextNode <#text>
        BlockContainer <div.flex-item> at (12,42) content-size 386x28 flex-item [BFC] children: inline
          frag 0 from TextNode start: 0, length: 6, rect: [12,42 61.859375x23] baseline: 17.5
              "Item 3"
          TextNode <#text>
        BlockContainer <div.flex-item> at (401,42) content-size 386x28 flex-item [BFC] children: inline
          frag 0 from TextNode start: 0, length: 6, rect: [401,42 60.171875x23] baseline: 17.5
              "Item 4"
          TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x82]
    PaintableWithLines (BlockContainer<BODY>) [9,9 782x64]
      PaintableBox (Box<DIV>.flex-container) [10,10 780x62]
        PaintableWithLines (BlockContainer<DIV>.flex-item) [11,11 388x30]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>.flex-item) [400,11 388x30]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>.flex-item) [11,41 388x30]
          TextPaintable (TextNode<#text>)
        PaintableWithLines (BlockContainer<DIV>.flex-item) [400,41 388x30]
          TextPaintable (TextNode<#text>)
