Saving my theme

ZmAn3

So when Im trying to save my first theme I get A error see screen shot, I do not see a place to enter this and my CSS already
Has the Mozilla
@-moz-document url(http://www.example.com/test.html) {
body {
background-color: black !important;
}
}

code so any idea what I Might be blind and missing? thanks

anagrammar

Code looks alright. I would guess the error is due to not filling out something correctly in the submission process. Tough to tell for sure, since the screenshot you're referring to doesn't appear to exist.

ZmAn3

it turns out it was being picky about my optional url :) thank you