Viewport <#document> at (0,0) content-size 800x600 children: not-inline
  BlockContainer <html> at (0,0) content-size 800x416 [BFC] children: not-inline
    BlockContainer <body> at (8,8) content-size 400x400 floating [BFC] children: not-inline
      ImageBox <img> at (58,8) content-size 300x400 children: not-inline
      BlockContainer <(anonymous)> at (8,408) content-size 400x0 children: inline
        TextNode <#text>

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x416]
    PaintableWithLines (BlockContainer<BODY>) [8,8 400x400]
      ImagePaintable (ImageBox<IMG>) [8,8 400x400]
      PaintableWithLines (BlockContainer(anonymous)) [8,408 400x0]

SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x416] [children: 0] (z-index: auto)
