Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x40 children: not-inline
    BlockContainer <body> at (8,8) content-size 784x24 children: inline
      line 0 width: 24, height: 24, bottom: 24, baseline: 24
        frag 0 from SVGSVGBox start: 0, length: 0, rect: [8,8 24x24]
      SVGSVGBox <svg> at (8,8) content-size 24x24 children: inline
        SVGGraphicsBox <g>  children: inline
          SVGSVGBox <svg> at (8,8) content-size 24x24 children: not-inline
            SVGGeometryBox <rect> at (8,8) content-size 24x24 children: not-inline
        TextNode <#text>
