Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] children: not-inline BlockContainer at [0,0] [0+0+0 800 0+0+0] [0+0+0 216 0+0+0] [BFC] children: not-inline Box at [8,8] flex-container(row) [8+0+0 784 0+0+8] [8+0+0 200 0+0+8] [FFC] children: not-inline BlockContainer
at [8,58] flex-item [0+0+0 100 0+0+0] [0+0+0 100 0+0+0] [BFC] children: not-inline BlockContainer at [108,108] flex-item [0+0+0 100 0+0+0] [100+0+0 100 0+0+0] [BFC] children: not-inline ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x216] PaintableBox (Box) [8,8 784x200] PaintableWithLines (BlockContainer
) [8,58 100x100] PaintableWithLines (BlockContainer) [108,108 100x100] SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto) SC for BlockContainer [0,0 800x216] [children: 0] (z-index: auto)