Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x17.46875 children: inline
      line 0 width: 8, height: 17.46875, bottom: 17.46875, baseline: 13.53125
        frag 0 from ImageBox start: 0, length: 0, rect: [8,21 0x0]
        frag 1 from TextNode start: 0, length: 1, rect: [8,8 8x17.46875]
          " "
        frag 2 from SVGSVGBox start: 0, length: 0, rect: [16,21 0x0]
      ImageBox <img> at (8,21) content-size 0x0 children: not-inline
        (SVG-as-image isolated context)
        Viewport <#document> at (0,0) content-size 0x0 [BFC] children: inline
          SVGSVGBox <svg> at (0,0) content-size 0x0 [SVG] children: inline
            TextNode <#text>
            SVGGeometryBox <rect> at (0,0) content-size 1x1 children: not-inline
            TextNode <#text>
      TextNode <#text>
      SVGSVGBox <svg> at (16,21) content-size 0x0 [SVG] children: inline
        TextNode <#text>
        SVGGeometryBox <rect> at (16,21) content-size 1x1 children: not-inline
        TextNode <#text>
      TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x17.46875]
      ImagePaintable (ImageBox<IMG>) [8,21 0x0]
      TextPaintable (TextNode<#text>)
      SVGSVGPaintable (SVGSVGBox<svg>) [16,21 0x0]
        SVGPathPaintable (SVGGeometryBox<rect>) [16,21 1x1]
