Sticky Header

script.js

// https://jsfiddle.net/gxRC9/502/
// var stickyOffset = $('.sticky').offset().top;

$(window).scroll(function(){
  var sticky = $('.sticky'),
      scroll = $(window).scrollTop();
  // if (scroll >= stickyOffset) sticky.addClass('fixed');
  if (scroll >= 200) sticky.addClass('fixed');
  else sticky.removeClass('fixed');
});

style.css

/** https://jsfiddle.net/gxRC9/502/ **/
.fixed {
  position: fixed !important;
  top:0; left:0;
  width: 100%; }
}