In the last couple of days I've tweaked the CSS and upgraded the Atom feed to be valid Atom 1.0.
If you've noticed any weirdness in the CSS (vast, and increasing in vastness, headings were what Mrs. Patterson saw) then refresh, or clear your cache, or just wait a bit and it should clear up.
The feed was invalid XML (due to undeclared and therefore unparseable entities like é in entry <content> tags) for an hour or so this morning, but don't worry: it's fixed now. (And I want to raise the issue of XHTML named entities in <content type="xhtml"> tags with somebody.)
Business as usual, then.