title: How to use css blur Filter?
body: <p>I want to build a blog so I should like to use a modern look. I'm very interested about a blur effect like iOS 7. I've read about filters applied to items. Well, I want to use this Filter in the menu bar (that will be fixed on top) so that the content below appears blurred. There's a way to do this with css? Or other code lenguage?</p>