jQuery plain slider - img only sliding - header is still

slider.js

var arrow_wrapper=$('.arrow-wrapper');
	if($(arrow_wrapper)){
		var prev=$('.arrow-wrapper .prev');
		var next=$('.arrow-wrapper .next');
		var banner_imgs = $('.banner-img-wrapper .banner-img-cnt');
		var banner_img_length = $(banner_imgs).length;
		console.log(banner_img_length);
		$(next).click(function(e) {
			e.preventDefault();
			let active_img=$('.banner-img-wrapper .banner-img-cnt.active').index();
			console.log(active_img);
			if(active_img==banner_img_length-1){
				$(banner_imgs[active_img]).removeClass('active');
				$(banner_imgs[0]).addClass('active');
			}
			else{
				$(banner_imgs[active_img]).removeClass('active');
				$(banner_imgs[active_img+1]).addClass('active');
			}
		});
		$(prev).click(function(e) {
			e.preventDefault();
			let active_img=$('.banner-img-wrapper .banner-img-cnt.active').index();
			console.log(active_img);
			if(active_img==0){
				$(banner_imgs[active_img]).removeClass('active');
				$(banner_imgs[1]).addClass('active');
			}
			else{
				$(banner_imgs[active_img]).removeClass('active');
				$(banner_imgs[active_img-1]).addClass('active');
			}
		});
	}