Viewport <#document> at (0,0) content-size 800x600 children: not-inline BlockContainer at (1,1) content-size 798x0 [BFC] children: not-inline BlockContainer at (10,10) content-size 4x54 positioned [BFC] children: not-inline BlockContainer at (11,11) content-size 2x52 children: not-inline BlockContainer at (12,12) content-size 0x50 children: not-inline ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x2] PaintableWithLines (BlockContainer) [9,9 6x56] PaintableWithLines (BlockContainer

.outer) [10,10 4x54] PaintableWithLines (BlockContainer

.inner) [11,11 2x52]