Viewport <#document> at (0,0) content-size 800x600 children: not-inline BlockContainer at (0,0) content-size 800x600 [BFC] children: not-inline BlockContainer at (8,8) content-size 784x200 children: not-inline Box at (8,8) content-size 200x200 [GFC] children: not-inline BlockContainer at (8,8) content-size 100x100 [BFC] children: not-inline ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x600] PaintableWithLines (BlockContainer) [8,8 784x200] PaintableBox (Box

.grid) [8,8 200x200] PaintableWithLines (BlockContainer

.item) [8,8 100x100]