Viewport <#document> at (0,0) content-size 800x600 children: not-inline BlockContainer at (1,1) content-size 798x176 [BFC] children: not-inline BlockContainer at (10,10) content-size 780x158 children: not-inline Box at (11,11) content-size 200x156 flex-container(column) [FFC] children: not-inline BlockContainer
at (12,12) content-size 50x50 flex-item [BFC] children: not-inline BlockContainer
at (12,64) content-size 50x50 flex-item [BFC] children: not-inline BlockContainer
at (12,116) content-size 50x50 flex-item [BFC] children: not-inline ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x178] PaintableWithLines (BlockContainer) [9,9 782x160] PaintableBox (Box
.flexbox) [10,10 202x158] PaintableWithLines (BlockContainer
) [11,11 52x52] PaintableWithLines (BlockContainer
) [11,63 52x52] PaintableWithLines (BlockContainer
) [11,115 52x52]