title: Pixel pattern overlay on website section - how is it done?
body: <p>I have been trying to figure out how a pixel pattern overlay can be applied over a website section like in this site: <a href="http://www.tinkeringmonkey.com/" rel="nofollow">http://www.tinkeringmonkey.com/</a> (over the background video image at top and image in bottom section)</p>
  
  <p>I'm sure this is fairly straightforward, I just don't know what to google to try and find the css or whatever I need to implement it.</p>
  
  <p>Thanks heaps for any replies!
  David</p>