Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer at (1,1) content-size 798x480 [BFC] children: not-inline
Box
at (10,10) content-size 500x462 flex-container(column) [FFC] children: not-inline
BlockContainer at (10,11) content-size 500x460 flex-item [BFC] children: inline
frag 0 from TextNode start: 0, length: 11, rect: [10,11 453.984375x92] baseline: 69.984375
"This entire"
frag 1 from TextNode start: 12, length: 11, rect: [10,103 455x92] baseline: 69.984375
"text should"
frag 2 from TextNode start: 24, length: 5, rect: [10,195 230.78125x92] baseline: 69.984375
"be on"
frag 3 from TextNode start: 30, length: 6, rect: [10,287 272.109375x92] baseline: 69.984375
"orange"
frag 4 from TextNode start: 37, length: 11, rect: [10,379 468.75x92] baseline: 69.984375
"background."
TextNode <#text>
BlockContainer <(anonymous)> (not painted) [BFC] children: inline
TextNode <#text>
ViewportPaintable (Viewport<#document>) [0,0 800x600]
PaintableWithLines (BlockContainer) [0,0 800x482]
PaintableBox (Box.hero) [9,9 502x464] overflow: [10,10 501x462]
PaintableWithLines (BlockContainer.upper) [9,10 502x462]
TextPaintable (TextNode<#text>)
SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto)
SC for BlockContainer [1,1 798x480] [children: 0] (z-index: auto)