Sorry it has take me so long to be 'round to this again.
I have fixed the malformed font-size statement and and sidekick does indeed now list the @media entry on line 348 (of the CSS file attched to this message).
However sidekick doesn't list any selectors contained within the @media print section. Is it even reasonable of me to expect it to? (I can imagine that duplicate selector names in different media sections might be a problem…)
Anyhow, I've re-attached my now-fixed CSS file. Sidekick 1.4 in jEdit 5.1.0 doesn't list any of the CSS selectors beyond line 348. I'd like it if did but understand if it can't be done…
Cheers, thanks 'gain for your help, & Merry / Happy and all that,