<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!DOCTYPE html>
<html lang="en">
<head>
<title>Side Menu</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<h1 class="page_title">Side Menu Animation</h1>
<h4 class="what_to_do">(click the menu icon)</h4>
<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="px-5">
<h2 class="menu_title">Menu Title</h2>
<ul class="list_load">
<li class="list_item"><a href="#">List Item 01</a></li>
<li class="list_item"><a href="#">List Item 02</a></li>
<li class="list_item"><a href="#">List Item 03</a></li>
<li class="list_item"><a href="#">List Item 04</a></li>