JSFiddle - React, Tailwind, and code Playground

HTML

<div class="calk_form">
					<div class="form">
						<select name="calc_city" id="calc_city" class="full" onchange="calc_tarif.disabled = !this.selectedIndex">
                            <option value="" disabled selected>Выберите город</option>
                            <option value="1" class="1">Люберцы</option>	
                            <option value="1" class="1">Москва</option>
                            <option value="1" class="1">Московский</option>
                            <option value="2" class="2">Калуга</option>
                            <option value="3" class="3">Малоярославец</option>
                            <option value="4" class="4">Обнинск</option>
                            <option value="5" class="5">Орехово-Зуево</option>
                        </select>
			<select name="calc_tarif" id="calc_tarif" class="full" disabled onchange="calc_proba.disabled = !this.selectedIndex">
                            <option value="" class="1">Программа кредитования</option>
                            <option value="" class="2">Программа кредитования</option>
                            <option value="" class="3">Программа кредитования</option>
                            <option value="" class="4">Программа кредитования</option>
                            <option value="" class="5">Программа кредитования</option>
	                   <option value="1" class="1">7:40</option>
                          <option value="2" class="1">До получки</option>
                          <option value="3" class="1">Пенсионный</option>
                          <option value="4" class="1">Супер Ноль %</option>
                          <option value="5" class="1">Свои Люди</option>
	                    <option value="1" class="2">7:40</option>
                            <option value="1" class="3">7:40</option>
                            <option value="1" class="4">7:40</option>
                            <option value="1" class="5">7:40</option>
	 ...

CSS

select option[disabled] {
  display: none;
}

JavaScript

$(document).ready(function(){
	var windowHeight = $(window).height();
	windowHeightMinF = windowHeight - 70;  	/* Минус футер */

	$('.contact_block.full').css('height', windowHeightMinF); 
	
	
	$('.slider').slick({
	  slidesToShow: 1,
	  arrows: false,
	  dots: true,
	  slidesToScroll: 1,
	  draggable: false,
	  autoplay: true,
	  autoplaySpeed: 3000,
	  fade: true
	}); 
	
	$('#city_top, #city_bottom').on('click', '.select span', function() {
		$('#city_top, #city_bottom').parent().find('.list').removeClass('show');
		$(this).parent().find('.list').addClass('show');
	});
	
	init();
	
	
	$('#city_top .list, #city_bottom .list').on('click', 'li', function() {
		var cityid = $(this).attr('data-id');
		var cityname = $(this).text();
		
		$('#city_top .list li, #city_bottom .list li').removeClass('active'); 
		$(this).addClass('active'); 
		
		$('#city_top .select span, #city_bottom .select span').text(cityname);
		
		$('#city_top, #city_bottom').find('.list').removeClass('show'); 
		
		$('#bt-menu .phone div').removeClass('active'); 
		$('#bt-menu .phone div[data-id="'+cityid+'"]').addClass('active'); 
		
		$('.contact_block_inner li').removeClass('active'); 
		$('.contact_block_inner li[data-id="'+cityid+'"]').addClass('active'); 
		
		$.cookie('city_id', cityid);
		$.cookie('city_name', cityname);  
		
		setCenter(cityid);
	});
	
	
	if ( $.cookie('city_id') && $.cookie('city_name')){
		var cityid = $.cookie('city_id');
		var cityname = $.cookie('city_name');
		
		$('#city_top .list li, #city_bottom .list li').removeClass('active'); 
		$('#city_top .list li[data-id="'+cityid+'"]').addClass('active'); 
		
		$('#city_top .select span, #city_bottom .select span').text(cityname);
		
		$('#city_top, #city_bottom').find('.list').removeClass('show'); 
		
		$('#bt-menu .phone div').removeClass('active'); 
		$('#bt-menu .phone div[data-id="'+cityid+'"]').addClass('active'); 
		
		$('.contact_block_inner li').removeClass('active'); 
		$('.contact_block_inner...