Viewport <#document> at (0,0) content-size 800x600 children: not-inline BlockContainer at (0,0) content-size 800x100 [BFC] children: not-inline Box at (0,0) content-size 800x100 flex-container(row) [FFC] children: not-inline ImageBox at (0,0) content-size 400x100 flex-item children: not-inline ImageBox at (600,0) content-size 200x100 flex-item children: not-inline ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x100] PaintableBox (Box) [0,0 800x100] ImagePaintable (ImageBox) [0,0 400x100] ImagePaintable (ImageBox.padded) [400,0 400x100]