Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x340 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 784x324 children: not-inline
      SVGSVGBox <svg> at (18,18) content-size 100x100 [SVG] children: not-inline
      BlockContainer <(anonymous)> at (8,128) content-size 784x0 children: inline
        TextNode <#text>
      BlockContainer <math> at (9,129) content-size 100x100 children: not-inline
      BlockContainer <(anonymous)> at (8,230) content-size 784x0 children: inline
        TextNode <#text>
      BlockContainer <div> at (9,231) content-size 100x100 children: not-inline
      BlockContainer <(anonymous)> at (8,332) content-size 784x0 children: inline
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x340]
    PaintableWithLines (BlockContainer<BODY>) [8,8 784x324]
      SVGSVGPaintable (SVGSVGBox<svg>) [8,8 120x120]
      PaintableWithLines (BlockContainer(anonymous)) [8,128 784x0]
      PaintableWithLines (BlockContainer<math>) [8,128 102x102]
      PaintableWithLines (BlockContainer(anonymous)) [8,230 784x0]
      PaintableWithLines (BlockContainer<DIV>) [8,230 102x102]
      PaintableWithLines (BlockContainer(anonymous)) [8,332 784x0]
