Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] [BFC] children: not-inline BlockContainer at [0,0] [0+0+0 800 0+0+0] [0+0+0 466 0+0+0] [BFC] children: not-inline Box at [8,8] [8+0+0 500 0+0+292] [8+0+0 450 0+0+8] [GFC] children: not-inline BlockContainer at [8,183] [0+0+0 500 0+0+0] [50+0+125 0 0+0+0] [BFC] children: not-inline BlockContainer at [8,183] [0+0+0 500 0+0+0] [0+0+0 0 175+0+100] [BFC] children: not-inline BlockContainer <(anonymous)> (not painted) [BFC] children: inline TextNode <#text> (not painted) ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x466] PaintableBox (Box) [8,8 500x450] PaintableWithLines (BlockContainer

.a) [8,58 500x125] PaintableWithLines (BlockContainer

.b) [8,183 500x175] SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto) SC for BlockContainer [0,0 800x466] [children: 0] (z-index: auto)