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 [0,0] [0+0+0 800 0+0+0] [0+0+0 80 0+0+0] [BFC] children: not-inline BlockContainer at [0,64] [0+0+0 800 0+0+0] [0+0+0 16 0+0+0] children: not-inline BlockContainer at [0,0] positioned [0+0+0 90.234375 0+0+0] [0+0+0 64 0+0+0] [BFC] children: inline frag 0 from TextNode start: 0, length: 11, rect: [0,0 90.234375x16] baseline: 12.796875 "Fixed stuff" TextNode <#text> (not painted) BlockContainer at [0,64] [0+0+0 800 0+0+0] [64+0+0 0 0+0+0] children: not-inline BlockContainer at [0,64] [0+0+0 800 0+0+0] [0+0+0 16 0+0+0] children: inline frag 0 from TextNode start: 0, length: 12, rect: [0,64 94.140625x16] baseline: 12.796875 "Hello world!" TextNode <#text> (not painted) ViewportPaintable (Viewport<#document>) [0,0 800x600] PaintableWithLines (BlockContainer) [0,0 800x80] PaintableWithLines (BlockContainer) [0,64 800x16] PaintableWithLines (BlockContainer

.fixed) [0,0 90.234375x64] PaintableWithLines (BlockContainer

.bump) [0,64 800x0] PaintableWithLines (BlockContainer

.content) [0,64 800x16] SC for Viewport<#document> [0,0 800x600] (z-index: auto) SC for BlockContainer [0,0 800x80] (z-index: auto) SC for BlockContainer

.fixed [0,0 90.234375x64] (z-index: auto)