title: Skew bottom background css
body: <p>I want to reproduce my mockup : <a href="http://imgur.com/ZsR88fe" rel="nofollow noreferrer">http://imgur.com/ZsR88fe</a></p>
  
  <p>But I don't know how to skew my background image, only at the bottom. For nom I try the transform skew but all the image is skewed and The top of the page look ugly : 
  <a href="http://imgur.com/TkUgppW" rel="nofollow noreferrer">http://imgur.com/TkUgppW</a></p>
  
  <p>What can I do to fix it ?</p>
  
  <p>Thanks in advance</p>