Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] [BFC] children: not-inline
  BlockContainer <html> at [0,0] [0+0+0 800 0+0+0] [0+0+0 366 0+0+0] [BFC] children: not-inline
    BlockContainer <body> at [8,8] [8+0+0 784 0+0+8] [8+0+0 350 0+0+8] children: inline
      frag 0 from SVGSVGBox start: 0, length: 0, rect: [8,8 784x350] baseline: 350
      SVGSVGBox <svg> at [8,8] [0+0+0 784 0+0+0] [0+0+0 350 0+0+0] [SVG] children: not-inline
        SVGGeometryBox <circle> at [250,28] [0+0+0 300 0+0+0] [0+0+0 300 0+0+0] children: not-inline
      TextNode <#text> (not painted)

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x366]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x350]
      SVGSVGPaintable (SVGSVGBox<svg>) [8,8 784x350]
        SVGPathPaintable (SVGGeometryBox<circle>) [250,28 300x300]

SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x366] [children: 0] (z-index: auto)
