text: 
  $(window).on('scroll', function(event) {
      var scrollValue = $(window).scrollTop();
      if (scrollValue > 100) {
          console.log("run to here.");
          $('.navbar').addClass('fixed-top');
          $('.affix + .container-fluid').css("padding-top", "80x");
      }
      else {
          $('.navbar').removeClass('fixed-top');
          $('.affix + .container-fluid').css("padding-top", "");
      }
      
      
  });
  