Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer at (0,0) content-size 800x0 [BFC] children: not-inline
Box at (8,8) content-size 50x50 positioned flex-container(row) [FFC] children: not-inline
ImageBox ![]()
at (8,8) content-size 50x50 flex-item children: not-inline
ViewportPaintable (Viewport<#document>) [0,0 800x600]
PaintableWithLines (BlockContainer) [0,0 800x0] overflow: [8,8 50x50]
PaintableBox (Box) [8,8 50x50]
ImagePaintable (ImageBox![]()
) [8,8 50x50]