Viewport <#document> at (0,0) content-size 800x600 children: not-inline BlockContainer at (0,0) content-size 800x600 [BFC] children: not-inline BlockContainer at (8,8) content-size 784x0 children: inline TextNode <#text> Box at (358.84375,19) content-size 82.3125x562 positioned flex-container(row) [FFC] children: not-inline BlockContainer <(anonymous)> (not painted) [BFC] children: inline TextNode <#text> BlockContainer at (358.84375,19) content-size 82.3125x562 flex-item [BFC] children: inline frag 0 from TextNode start: 0, length: 10, rect: [358.84375,19 82.3125x17] baseline: 13.296875 "I'm a node" TextNode <#text> BlockContainer <(anonymous)> (not painted) [BFC] children: inline TextNode <#text> ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x600] PaintableWithLines (BlockContainer) [8,8 784x0] PaintableBox (Box