Viewport <#document> at (0,0) content-size 800x600 children: not-inline BlockContainer at (1,1) content-size 798x220 [BFC] children: not-inline BlockContainer at (10,10) content-size 780x202 children: not-inline Box at (11,11) content-size 200x200 positioned [GFC] children: not-inline BlockContainer at (61,61) content-size 100x100 positioned [BFC] children: not-inline ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x222] PaintableWithLines (BlockContainer) [9,9 782x204] PaintableBox (Box

.container) [10,10 202x202] PaintableWithLines (BlockContainer

.box) [60,60 102x102]