title: My site is not working properly in mobile, it's working fine in desktop version
body: <p>Actually my site content working in opposite direction to background image. So I use j query to calculate height of every section and position my main section in negative top position. When I scroll my content with mouse wheel its goes top to bottom and background move bottom to top. But in mobile it's not working. I have assign height to every main section on run time according to content and window height which is greater then.</p>
  
  <p>i am using my concept with 2 div. one for background and other for content. for this i calculate total height of content and move content div in negative but in mobile it doesn't work properly. </p>
  
  <pre><code>$("div.content_scroll").css({
              'top': -(totalHeight + topmaindiv - ($(window).height() - $("#main-nav").height())) + "px",
      });
  </code></pre>
  
  <p>when i scroll content in mobile it;s not moving down</p>
  
  <p>any one can have solution for this </p>