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 54 0+0+0] [BFC] children: not-inline
BlockContainer
at [8,8] [8+0+0 784 0+0+8] [8+0+0 38 0+0+8] children: not-inline
BlockContainer at [18,18] [0+10+0 764 0+10+0] [0+10+0 18 0+10+0] children: inline
frag 0 from TextNode start: 0, length: 5, rect: [18,18 36.84375x18] baseline: 13.796875
"hello"
TextNode <#text> (not painted)
ViewportPaintable (Viewport<#document>) [0,0 800x600]
PaintableWithLines (BlockContainer) [0,0 800x54]
PaintableWithLines (BlockContainer) [8,8 784x38]
PaintableWithLines (BlockContainer.hmm) [8,8 784x38]
TextPaintable (TextNode<#text>)
SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
SC for BlockContainer [0,0 800x54] [children: 0] (z-index: auto)