Viewport <#document> at (0,0) content-size 800x600 children: not-inline BlockContainer at (1,1) content-size 798x68 [BFC] children: not-inline Box at (10,10) content-size 38.84375x50 flex-container(row) [FFC] children: not-inline BlockContainer at (11,11) content-size 36.84375x48 flex-item [BFC] children: inline frag 0 from TextNode start: 0, length: 5, rect: [11,11 36.84375x17] baseline: 13.296875 "hello" TextNode <#text> ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x70] PaintableBox (Box.flex) [9,9 40.84375x52] PaintableWithLines (BlockContainer

.item) [10,10 38.84375x50] TextPaintable (TextNode<#text>)