Thanks. adding tooltips for titles sounds like a win. I suspect I wasn't clear enough about one thing: that CSS I showed works in Stylish and does not work in Stylus. This made me wonder if, as with browsers, there's more and less pedantic and the thing that works in Stylish isn't actually *correct* but is liberally interpreted by the add-on, or something like that.

(Thanks also for telling me what the category name is for those classes and IDs that say what the CSS applies to.)