RequestPolicy is a Firefox extension that gives you control over cross-site requests. --- Be sure to look at the dev-1.0 branch as that's where all of the interesting work is happening. See also: https://www.requestpolicy.com/1.0.html
I noticed that some websites use external .css, maybe they should be automatically allowed or at least marked as such, e.g. with a (.CSS) next to the blocked website
I noticed that some websites use external .css, maybe they should be automatically allowed or at least marked as such, e.g. with a (.CSS) next to the blocked website