Viewport <#document> at [0,0] [0+0+0 800 0+0+0] [0+0+0 600 0+0+0] [BFC] children: not-inline BlockContainer at [1,1] [0+1+0 798 0+1+0] [0+1+0 38 0+1+0] [BFC] children: not-inline BlockContainer at [10,10] [8+1+0 780 0+1+8] [8+1+0 20 0+1+8] children: not-inline Box at [11,11] [0+1+0 778 0+1+0] [0+1+0 18 0+1+0] [GFC] children: not-inline BlockContainer at [12,12] [0+1+0 516.625 0+1+0] [0+1+0 16 0+1+0] [BFC] children: inline frag 0 from TextNode start: 0, length: 1, rect: [12,12 6.34375x16] baseline: 12.796875 "1" TextNode <#text> (not painted) BlockContainer at [530.625,12] [0+1+0 257.3125 0+1+0] [0+1+0 16 0+1+0] [BFC] children: inline frag 0 from TextNode start: 0, length: 1, rect: [530.625,12 8.8125x16] baseline: 12.796875 "2" TextNode <#text> (not painted) ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x40] PaintableWithLines (BlockContainer) [9,9 782x22] Paintable (Box

.grid-container) [10,10 780x20] PaintableWithLines (BlockContainer

.a) [11,11 518.625x18] PaintableWithLines (BlockContainer

.b) [529.625,11 259.3125x18] SC for Viewport<#document> [0,0 800x600] (z-index: auto) SC for BlockContainer [1,1 798x38] (z-index: auto)