It's probably in the javascript. But I don't see it as a fade effect. For me the menu scrolls upward to close. Is that what you mean? I want to be sure exactly which effect you mean before I go looking in the code.
It's probably in the javascript. But I don't see it as a fade effect. For me the menu scrolls upward to close. Is that what you mean? I want to be sure exactly which effect you mean before I go looking in the code.