Viewport <#document> at (0,0) content-size 800x600 children: not-inline BlockContainer at (1,1) content-size 798x39 [BFC] children: not-inline Box at (10,10) content-size 780x21 flex-container(row) [FFC] children: not-inline BlockContainer at (11,11) content-size 202x19 flex-item [BFC] children: not-inline BlockContainer at (12,12) content-size 200x17 children: inline frag 0 from TextNode start: 0, length: 4, rect: [12,12 45.15625x17] baseline: 13.296875 "OPEN" TextNode <#text> ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x41] PaintableBox (Box.outer) [9,9 782x23] PaintableWithLines (BlockContainer

.middle) [10,10 204x21] PaintableWithLines (BlockContainer

.inner) [11,11 202x19] TextPaintable (TextNode<#text>)