At the recent RISC OS show in Wakefield, someone pointed out to me that we were making a mess of the BBC Sport site, and I said I'd post here once I'd got around to fixing it.
The problem was that BBC was using the overflow-x property from CSS3 and neither LibCSS or NetSurf supported that. (We only supported the overflow property.) So LibCSS has been updated to support overflow-x and overflow-y, and so has NetSurf. The original overflow property is now a shorthand that sets both overflow-x and overflow-y. Cheers,