DIV position fixed at top on scroll

You are looking for Div sticky while you scroll the page . Use this below script .

<script>
 $(window).scroll(function(){
      if ($(this).scrollTop() > 150) {
          $('#div_id').addClass('fixed_class'); /* change #div_id to your div id*/
      } else {
          $('#div_id').removeClass('fixed_class'); /* change #div_id to your div id*/
      }
  });
  </script>
  <style>
  .fixed_class { position:fixed; top:0; left:0;}
  </style>