Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] [BFC] children: not-inline
  BlockContainer <html> at [0,0] [0+0+0 800 0+0+0] [0+0+0 100 0+0+0] [BFC] children: not-inline
    Box <body> at [0,0] flex-container(row) [0+0+0 800 0+0+0] [0+0+0 100 0+0+0] [FFC] children: not-inline
      ImageBox <img> at [0,0] flex-item [0+0+0 400 0+0+0] [0+0+0 100 0+0+0] children: not-inline
      ImageBox <img.padded> at [600,0] flex-item [0+0+200 200 0+0+0] [0+0+0 100 0+0+0] children: not-inline

ViewportPaintable (Viewport<#document>) [0,0 800x600]
  PaintableWithLines (BlockContainer<HTML>) [0,0 800x100]
    PaintableBox (Box<BODY>) [0,0 800x100]
      ImagePaintable (ImageBox<IMG>) [0,0 400x100]
      ImagePaintable (ImageBox<IMG>.padded) [400,0 400x100]

SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
 SC for BlockContainer<HTML> [0,0 800x100] [children: 0] (z-index: auto)
