Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] [BFC] children: not-inline BlockContainer at [0,0] [0+0+0 800 0+0+0] [0+0+0 20 0+0+0] [BFC] children: not-inline BlockContainer at [0,0] [0+0+0 800 0+0+0] [0+0+0 20 0+0+0] children: not-inline Box at [0,0] [0+0+0 800 0+0+0] [0+0+0 20 0+0+0] [GFC] children: not-inline Box at [0,0] [0+0+0 180 0+0+0] [0+0+0 20 0+0+0] [GFC] children: not-inline BlockContainer at [40,0] [0+0+0 60 0+0+0] [0+0+0 20 0+0+0] [BFC] children: not-inline BlockContainer <(anonymous)> at [0,20] [0+0+0 800 0+0+0] [0+0+0 0 0+0+0] children: inline TextNode <#text> (not painted) ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x20] PaintableWithLines (BlockContainer) [0,0 800x20] Paintable (Box

.parent) [0,0 800x20] Paintable (Box

.subgrid) [0,0 180x20] PaintableWithLines (BlockContainer

.item) [40,0 60x20] PaintableWithLines (BlockContainer(anonymous)) [0,20 800x0] SC for Viewport<#document> [0,0 800x600] (z-index: auto) SC for BlockContainer [0,0 800x20] (z-index: auto)