Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] children: not-inline
  BlockContainer <html> at [0,0] [0+0+0 800 0+0+0] [0+0+0 54 0+0+0] [BFC] children: not-inline
    BlockContainer <body.outer> at [18,18] [8+0+10 280.84375 10+0+491.15625] [8+0+10 18 10+0+8] children: not-inline
      Box <div.inner> at [18,18] flex-container(row) [0+0+0 280.84375 0+0+0] [0+0+0 18 0+0+0] [FFC] children: not-inline
        BlockContainer <(anonymous)> at [18,18] flex-item [0+0+0 280.84375 0+0+0] [0+0+0 18 0+0+0] [BFC] children: inline
          frag 0 from TextNode start: 0, length: 35, rect: [18,18 280.84375x18] baseline: 13.796875
              "this text should be all on one line"
          TextNode <#text> (not painted)

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x54]
    PaintableWithLines (BlockContainer<BODY>.outer) [8,8 300.84375x38]
      PaintableBox (Box<DIV>.inner) [18,18 280.84375x18]
        PaintableWithLines (BlockContainer(anonymous)) [18,18 280.84375x18]
          TextPaintable (TextNode<#text>)

SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x54] [children: 0] (z-index: auto)
