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at (212,12) content-size 98x18 [BFC] children: inline frag 0 from TextNode start: 0, length: 1, rect: [212,12 9.09375x18] baseline: 13.796875 "3" TextNode <#text> BlockContainer
at (12,32) content-size 48x18 [BFC] children: inline frag 0 from TextNode start: 0, length: 1, rect: [12,32 7.75x18] baseline: 13.796875 "4" TextNode <#text> ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x62] PaintableWithLines (BlockContainer) [9,9 782x44] PaintableBox (Box
.grid-container) [10,10 780x42] PaintableWithLines (BlockContainer
.a) [61,11 100x20] TextPaintable (TextNode<#text>) PaintableWithLines (BlockContainer
) [161,11 50x20] TextPaintable (TextNode<#text>) PaintableWithLines (BlockContainer
) [211,11 100x20] TextPaintable (TextNode<#text>) PaintableWithLines (BlockContainer
) [11,31 50x20] TextPaintable (TextNode<#text>) SC for Viewport<#document> [0,0 800x600] [children: 1] (z-index: auto) SC for BlockContainer [1,1 798x60] [children: 0] (z-index: auto)