Viewport <#document> at (0,0) content-size 800x600 children: not-inline BlockContainer at (0,0) content-size 800x116 [BFC] children: not-inline Box at (8,8) content-size 784x100 flex-container(column) [FFC] children: not-inline BlockContainer
at (8,8) content-size 100x100 flex-item [BFC] children: not-inline ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x116] PaintableBox (Box) [8,8 784x100] PaintableWithLines (BlockContainer
) [8,8 100x100]