I am aware that there is a message at the top of the page to the effect of

/* Embedded CSS for "Apprendre le français I: Appât Couverture" */

This seems to be a side-effect of some actual embedded CSS I’m using in foreign-language script posts. Please be assured I am working on making it go away.

Update some hours later. Appears to be fixed for now, though I have a bit of wood to chop before I think the fix is permanent.