/* Add css in your style */
.sticky-header {
position: fixed;
width: 100%;
left: 0;
top: 0;
z-index: 100;
border-top: 0;
transition: 0.3s;
}
/* and use this javascript code: */
$(document).ready(function() {
$(window).scroll(function () {
if ($(window).scrollTop() > ) {
$('.headercss').addClass('sticky-header');
} else{
$('.headercss').removeClass('sticky-header');
}
});
});