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BlockContainer at [1,1] [0+1+0 798 0+1+0] [0+1+0 420 0+1+0] [BFC] children: not-inline
Box
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BlockContainer at [10,11] flex-item [0+1+0 500 0+1+0] [0+1+0 400 0+1+0] [BFC] children: inline
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"This entire"
frag 1 from TextNode start: 12, length: 11, rect: [10,91 455x80] baseline: 63.984375
"text should"
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"be on"
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"orange"
frag 4 from TextNode start: 37, length: 11, rect: [10,331 468.75x80] baseline: 63.984375
"background."
TextNode <#text> (not painted)
BlockContainer <(anonymous)> (not painted) [BFC] children: inline
TextNode <#text> (not painted)
ViewportPaintable (Viewport<#document>) [0,0 800x600]
PaintableWithLines (BlockContainer) [0,0 800x422]
Paintable (Box.hero) [9,9 502x404]
PaintableWithLines (BlockContainer.upper) [9,10 502x402]
SC for Viewport<#document> [0,0 800x600] (z-index: auto)
SC for BlockContainer [1,1 798x420] (z-index: auto)