Viewport <#document> at (0,0) content-size 800x600 children: not-inline
BlockContainer <html> at (1,1) content-size 798x520 [BFC] children: not-inline
BlockContainer <body> at (10,10) content-size 780x502 children: not-inline
Box <div.grid> at (11,11) content-size 500x500 [GFC] children: not-inline
BlockContainer <div#a> at (12,12) content-size 98x105.59375 [BFC] children: inline
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"1"
TextNode <#text>
BlockContainer <div#b> at (12,119.59375) content-size 498x282.78125 [BFC] children: inline
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"2"
TextNode <#text>
BlockContainer <div#c> at (12,404.375) content-size 98x105.59375 [BFC] children: inline
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"3"
TextNode <#text>
BlockContainer <div#d> at (112,404.375) content-size 98x105.59375 [BFC] children: inline
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"4"
TextNode <#text>
ViewportPaintable (Viewport<#document>) [0,0 800x600]
PaintableWithLines (BlockContainer<HTML>) [0,0 800x522]
PaintableWithLines (BlockContainer<BODY>) [9,9 782x504]
PaintableBox (Box<DIV>.grid) [10,10 502x502]
PaintableWithLines (BlockContainer<DIV>#a) [11,11 100x107.59375]
TextPaintable (TextNode<#text>)
PaintableWithLines (BlockContainer<DIV>#b) [11,118.59375 500x284.78125]
TextPaintable (TextNode<#text>)
PaintableWithLines (BlockContainer<DIV>#c) [11,403.375 100x107.59375]
TextPaintable (TextNode<#text>)
PaintableWithLines (BlockContainer<DIV>#d) [111,403.375 100x107.59375]
TextPaintable (TextNode<#text>)