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 64 0+0+0] [BFC] children: not-inline
    BlockContainer <body> at [8,8] [8+0+0 784 0+0+8] [8+0+0 48 0+0+8] children: inline
      frag 0 from SVGSVGBox start: 0, length: 0, rect: [8,8 48x48] baseline: 48
      SVGSVGBox <svg> at [8,8] [0+0+0 48 0+0+0] [0+0+0 48 0+0+0] [SVG] children: inline
        TextNode <#text> (not painted)
        TextNode <#text> (not painted)
        TextNode <#text> (not painted)
        SVGForeignObjectBox <foreignObject> at [12,12] [0+0+0 40 0+0+0] [0+0+0 40 0+0+0] [BFC] children: not-inline
          BlockContainer <(anonymous)> at [12,12] [0+0+0 40 0+0+0] [0+0+0 0 0+0+0] children: inline
            TextNode <#text> (not painted)
          BlockContainer <div> at [12,12] [0+0+0 100 0+0+-60] [0+0+0 100 0+0+0] children: not-inline
          BlockContainer <(anonymous)> at [12,112] [0+0+0 40 0+0+0] [0+0+0 0 0+0+0] children: inline
            TextNode <#text> (not painted)
          SVGMaskBox <mask#«r1»> at [12,12] [0+0+0 48 0+0+0] [0+0+0 48 0+0+0] children: not-inline
            SVGGraphicsBox <use> at [12,12] [0+0+0 40 0+0+0] [0+0+0 40 0+0+0] children: not-inline
              SVGGeometryBox <path#«r1»-blob_mask> at [12,12] [0+0+0 40 0+0+0] [0+0+0 40 0+0+0] children: not-inline
        TextNode <#text> (not painted)
      TextNode <#text> (not painted)

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x64]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x48]
      SVGSVGPaintable (SVGSVGBox<svg>) [8,8 48x48]
        SVGForeignObjectPaintable (SVGForeignObjectBox<foreignObject>) [12,12 40x40] overflow: [12,12 100x100]
          PaintableWithLines (BlockContainer(anonymous)) [12,12 40x0]
          PaintableWithLines (BlockContainer<DIV>) [12,12 100x100]
          PaintableWithLines (BlockContainer(anonymous)) [12,112 40x0]

SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x64] [children: 1] (z-index: auto)
  SC for SVGForeignObjectBox<foreignObject> [12,12 40x40] [children: 0] (z-index: auto)
