Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x33.46875 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 0x17.46875 children: inline
      line 0 width: 0, height: 17.46875, bottom: 17.46875, baseline: 13.53125
        frag 0 from SVGSVGBox start: 0, length: 0, rect: [8,21 0x0]
      SVGSVGBox <svg> at (8,21) content-size 0x0 [SVG] children: not-inline

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x33.46875]
    PaintableWithLines (BlockContainer<BODY>) [8,8 0x17.46875]
      SVGSVGPaintable (SVGSVGBox<svg>) [8,21 0x0]
