title: OS X Yosemite menu background blur in CSS
body: <p>I'm looking for a way to get the blurry background effect of OS X 10.10 working in css. Blurring with <code>filter:blur</code> or an SVG Gaussian filter will also blur the border, so this will not work.</p>
  
  <p>Here is an example of the effect: <img src="https://i.stack.imgur.com/2EOVH.jpg" alt="http://i.stack.imgur.com/2EOVH.jpg"></p>