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 56 0+1+0] [BFC] children: not-inline BlockContainer at [10,10] [8+1+0 780 0+1+8] [8+1+0 38 0+1+8] children: not-inline Box at [11,11] [0+1+0 778 0+1+0] [0+1+0 36 0+1+0] [GFC] children: not-inline BlockContainer at [12,12] [0+1+0 776 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 [12,30] [0+1+0 387 0+1+0] [0+1+0 16 0+1+0] [BFC] children: inline frag 0 from TextNode start: 0, length: 1, rect: [12,30 8.8125x16] baseline: 12.796875 "2" TextNode <#text> (not painted) ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x58] PaintableWithLines (BlockContainer) [9,9 782x40] Paintable (Box
.grid-container) [10,10 780x38] PaintableWithLines (BlockContainer
.a) [11,11 778x18] PaintableWithLines (BlockContainer
) [11,29 389x18] SC for Viewport<#document> [0,0 800x600] (z-index: auto) SC for BlockContainer [1,1 798x56] (z-index: auto)