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
"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>)