In the Style panel, it is possible to disable individual CSS rules by clicking the little box next to the rule. It would be helpful to have similar check boxes for the entire class/ID itself, or perhaps have a "disable class/ID" option added to the "three dot" menu. It would also be helpful if you could temporarily disable an entire stylesheet without having to delete>undo just to test.
Thank you for the suggestion! I think it would be a good addition to the dot menu on CSS blocks. I am adding it to our todo :)
+111111 :)