Viewport <#document> at (0,0) content-size 800x600 children: not-inline BlockContainer at (0,0) content-size 800x33 [BFC] children: inline frag 0 from Box start: 0, length: 0, rect: [8,8 26.953125x17] baseline: 21.296875 Box at (8,8) content-size 26.953125x17 [GFC] children: not-inline BlockContainer <(anonymous)> at (8,8) content-size 26.953125x17 [BFC] children: inline frag 0 from TextNode start: 0, length: 3, rect: [8,8 26.953125x17] baseline: 13.296875 "whf" TextNode <#text> ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x33] PaintableBox (Box) [8,8 26.953125x17] PaintableWithLines (BlockContainer(anonymous)) [8,8 26.953125x17] TextPaintable (TextNode<#text>)