title: black background (opacity 0.6) after an image background, and text is opacity 1
body: <p><a href="http://www.formget.com/css-background-opacity/" rel="nofollow">Here is an example</a></p>
  
  <p>As you see the tutorial, there got 3 different opacity picture which are 0.2, 0.6, and 1.<br>
  Notice at the opacity=0.2, the background is totally white, but what i want is opacity more to black. <br>
  and the text i want is white. Anyone can help ?</p>