JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="ru">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=7; IE=Edge">
<title></title>
<meta name="description" content="">
<link rel="stylesheet" href="css/test.css">
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js'></script>
<script src="js/menupc.js"></script><!--меню пк-->
</head> 
<body>
    

<div class="side_menu">
	<div class="burger_box">
		<div class="menu-icon-container">
			<a href="#" class="menu-icon js-menu_toggle closed">
				<span class="menu-icon_box">
					<span class="menu-icon_line menu-icon_line--1"></span>
					<span class="menu-icon_line menu-icon_line--2"></span>
					<span class="menu-icon_line menu-icon_line--3"></span>
				</span>
			</a>
		</div>
	</div>
	<div class="container">
		<ul class="list_load">
			<li class="list_item"><a href="#">list_item1</a></li>
			<li class="list_item"><a href="#">list_item2</a></li>
			<li class="list_item"><a href="#">list_item3</a></li>
			<li class="list_item"><a href="#">list_item4</a></li>
			<li class="list_item"><a href="#">list_item5</a></li>
			<li class="list_item"><a href="#">list_item6</a></li>
			<li class="list_item"><a href="#">list_item7</a></li>
			<li class="list_item"><a href="#">list_item8</a></li>
            <li class="list_item"><a href="#">list_item9</a></li>
			<li class="list_item"><a href="#">list_item10</a></li>
			<li class="list_item"><a href="#">list_item11</a></li>
			<li class="list_item"><a href="#">list_item12</a></li>
			<li class="list_item"><a href="#">list_item13</a></li>
			<li class="list_item"><a href="#">list_item14</a></li>
			<li class="list_item"><a href="#">list_item15</a></li>
			<li class="list_item"><a href="#">list_item16</a></li>
            <li class="list_item"><a href="#">list_item17</a></li>
			<li class="list_item"><a href="#">list_item18</a></li>
			<li class="list_item"><a href="#">list_item19</a></li>
			<li...

CSS

* {
	padding: 0;
	margin: 0;
 }

body {background: #5e8cba;}

/*Выпадающее меню*/
.side_menu {
  position: fixed;
  background: #fff;
  height: 100%;
  left: -270px;
  top: 0;
  width: 270px;
  -webkit-transition: all 300ms ease-in-out;
  transition: all 300ms ease-in-out;
  z-index: 99999;
}

/*Меню*/
.list_load {
  display: none;
  list-style: none;
  padding: 0;
}

.side_menu .container {
  margin-left: 20px;
  margin-top: 20px;
  overflow-y: scroll;
  height: 100%;
  width: 245px;
}

.list_item a {
  display: block;
  font-family: system, -apple-system, BlinkMacSystemFont, Segoe UI, tahoma, Arial, sans-serif;
  font-size: 16px;
  color: #000;
  padding: 0px 15px;
  line-height: 38px;
  text-decoration: none;
}

.list_item a:hover {
  background: #af8c6a;
  color: #fff;
  border-radius: 8px;
  width: 200px;
}

/*Скроллбар*/
.container::-webkit-scrollbar {
  width: 6px;
}

.container::-webkit-scrollbar-thumb {
  background-color: #e8e8e8; 
  border-radius: 4px;
}

/*Кнопка*/
.burger_box {
  float: right;
  display: block;
  margin-right: -45px;
}

.burger_box .menu-icon_box {
  position: relative;
  display: inline-block;
  width: 30px;
  height: 40px;
  text-align: left;
}

.burger_box .menu-icon_line {
  position: absolute;
  display: inline-block;
  background: #fff;
  border-radius: 8px;
  height: 4px;
  width: 30px;
}

.burger_box .menu-icon_line--1 {
  top: 2px;
}

.burger_box .menu-icon_line--2 {
  top: 10px;
}

.burger_box .menu-icon_line--3 {
  top: 18px;
}
	
.burger_box .menu-icon.opened .menu-icon_line {
  top: 10px;
}

.burger_box .menu-icon.opened .menu-icon_line--1 {
  transform: rotate3d(0, 0, 1, 45deg);
  -webkit-transform: rotate3d(0, 0, 1, 45deg);
  transition: top 100ms, transform 200ms 250ms;
  -webkit-transition: top 100ms, -webkit-transform 200ms 250ms;
}

.burger_box .menu-icon.opened .menu-icon_line--2 {
  opacity: 0;
  transition: opacity 200ms;
  -webkit-transition: opacity 200ms;
}

.burger_box .menu-icon.opened .menu-icon_line--3 {
 ...

JavaScript

$(document).on('click','.js-menu_toggle.closed',function(e){
	e.preventDefault(); $('.list_load, .list_item').stop();
	$(this).removeClass('closed').addClass('opened');

	$('.side_menu').css({ 'left':'0px' });

	var count = $('.list_item').length;
	$('.list_load').slideDown( (count*.0)*0 );
	$('.list_item').each(function(i){
		var thisLI = $(this);
		timeOut = 0*i;
		setTimeout(function(){
			thisLI.css({
				'opacity':'1',
				'margin-left':'0'
			});
		},0*i);
	});
});

$(document).on('click','.js-menu_toggle.opened',function(e){
	e.preventDefault(); $('.list_load, .list_item').stop();
	$(this).removeClass('opened').addClass('closed');

	$('.side_menu').css({ 'left':'-270px' });

	var count = $('.list_item').length;
	$('.list_item').css({
		'opacity':'0',
		'margin-left':'-20px'
	});
	$('.list_load').slideUp(0);
});