Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] [BFC] children: not-inline BlockContainer at [0,0] [0+0+0 800 0+0+0] [0+0+0 65 0+0+0] [BFC] children: not-inline BlockContainer at [8,13] [8+0+0 784 0+0+8] [8+0+0 39 0+0+13] children: not-inline BlockContainer
at [8,13] [0+0+0 784 0+0+0] [0+0+0 39 0+0+0] children: not-inline BlockContainer <(anonymous)> at [8,13] [0+0+0 784 0+0+0] [0+0+0 0 0+0+0] children: inline TextNode <#text> (not painted) BlockContainer 
 at [8,13] [0+0+0 784 0+0+0] [13+0+0 39 0+0+13] children: inline
          frag 0 from TextNode start: 0, length: 5, rect: [8,13 29.921875x13] baseline: 10.390625
              "hello"
          frag 1 from TextNode start: 1, length: 1, rect: [8,39 6.5x13] baseline: 10.390625
              " "
          TextNode <#text> (not painted)
          InlineNode  at [8,13] [0+10+0 0 0+10+0] [0+10+0 13 0+10+0]
          TextNode <#text> (not painted)
        BlockContainer <(anonymous)> at [8,65] [0+0+0 784 0+0+0] [0+0+0 0 0+0+0] children: inline
          TextNode <#text> (not painted)
      BlockContainer <(anonymous)> at [8,65] [0+0+0 784 0+0+0] [0+0+0 0 0+0+0] children: inline
        TextNode <#text> (not painted)

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer) [0,0 800x65]
    PaintableWithLines (BlockContainer) [8,13 784x39]
      PaintableWithLines (BlockContainer
) [8,13 784x39]
        PaintableWithLines (BlockContainer(anonymous)) [8,13 784x0]
        PaintableWithLines (BlockContainer
) [8,13 784x39]
          PaintableWithLines (InlineNode) [-2,3 20x33]
        PaintableWithLines (BlockContainer(anonymous)) [8,65 784x0]
      PaintableWithLines (BlockContainer(anonymous)) [8,65 784x0]

SC for Viewport<#document> [0,0 800x600] (z-index: auto)
 SC for BlockContainer [0,0 800x65] (z-index: auto)