Footer Sticky using JS and CSS

/* CSS */

.footer-cta-wrapper{
position: fixed !important;
bottom: -140px  !important;
left: 0;
right: 0;
z-index: 9999;
transition: all 0.4s ease-in-out !important;
}
.footer-cta-wrapper.footer-cta-show{
bottom: 0 !important;
}

/* Function.js */
/* Sticky Footer */
$window.scroll(function(){
if ($window.scrollTop() > 200) {
$('.footer-cta-wrapper').addClass('footer-cta-show');
} else {
$('.footer-cta-wrapper').removeClass('footer-cta-show');
}
});