Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer at (0,0) content-size 800x105.875 [BFC] children: not-inline
BlockContainer
at (8,21.4375) content-size 784x76.4375 children: not-inline
BlockContainer at (8,21.4375) content-size 784x37 children: inline
frag 0 from TextNode start: 0, length: 6, rect: [8,21.4375 105.53125x37] baseline: 28.09375
"header"
TextNode <#text>
BlockContainer <(anonymous)> at (8,79.875) content-size 784x18 children: inline
frag 0 from TextNode start: 0, length: 24, rect: [8,79.875 212.125x18] baseline: 13.796875
"anonymously wrapped text"
TextNode <#text>
ViewportPaintable (Viewport<#document>) [0,0 800x600]
PaintableWithLines (BlockContainer) [0,0 800x105.875]
PaintableWithLines (BlockContainer) [8,21.4375 784x76.4375]
PaintableWithLines (BlockContainer) [8,21.4375 784x37]
TextPaintable (TextNode<#text>)
PaintableWithLines (BlockContainer(anonymous)) [8,79.875 784x18]
TextPaintable (TextNode<#text>)
SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
SC for BlockContainer [0,0 800x105.875] [children: 0] (z-index: auto)