Viewport <#document> at (0,0) content-size 800x600 children: not-inline BlockContainer at (0,0) content-size 800x16 [BFC] children: not-inline BlockContainer at (8,8) content-size 784x0 children: not-inline BlockContainer
at (8,8) content-size 784x0 children: inline frag 0 from TextNode start: 0, length: 21, rect: [8,8 0x0] baseline: 0.296875 "should not be visible" TextNode <#text> ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x16] PaintableWithLines (BlockContainer) [8,8 784x0] PaintableWithLines (BlockContainer
) [8,8 784x0] TextPaintable (TextNode<#text>) SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto) SC for BlockContainer [0,0 800x16] [children: 0] (z-index: auto)