Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x53 [BFC] children: not-inline
    BlockContainer <body.outer> at (18,18) content-size 280.84375x17 children: not-inline
      Box <div.inner> at (18,18) content-size 280.84375x17 flex-container(row) [FFC] children: not-inline
        BlockContainer <(anonymous)> at (18,18) content-size 280.84375x17 flex-item [BFC] children: inline
          frag 0 from TextNode start: 0, length: 35, rect: [18,18 280.84375x17] baseline: 13.296875
              "this text should be all on one line"
          TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x53]
    PaintableWithLines (BlockContainer<BODY>.outer) [8,8 300.84375x37]
      PaintableBox (Box<DIV>.inner) [18,18 280.84375x17]
        PaintableWithLines (BlockContainer(anonymous)) [18,18 280.84375x17]
          TextPaintable (TextNode<#text>)
