index.html
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Stanislav Andreev</title>
<!-- normalize css -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css" />
<!-- https://fonts.google.com/ -->
<link href="https://fonts.googleapis.com/css?family=Quicksand" rel="stylesheet" type="text/css" />
<!-- https://fontawesome.com/ -->
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.6.3/css/all.css" integrity="sha384-UHRtZLI+pbxtHCWp1t77Bi1L4ZtiqrqD80Kn4Z8NTSRyMA2Fd33n5dQ8lWUE00s/" crossorigin="anonymous" />
<link href="css/style.css" rel="stylesheet" type="text/css" />
<link href="css/navigation.css" rel="stylesheet" type="text/css" />
</head>
<body>
<!-- Header and nav -->
<header>
<section id="nav">
<div class="wrapper">
<nav class="site-nav">
<!-- <h1 class="logo">Atech<span>Seva</span></h1> -->
<h1 class="logo"><img src="logo/logo.png" alt="" /></h1>
<div class="menu-toggle">
<div class="hamburger"></div>
</div>
<ul class="open desktop">
<li>
<a href="javascript:void(0)" id="one"><i class="fas fa-home site-nav--icon"></i>Home</a>
</li>
<li>
<a href="javascript:void(0)"><i class="fas fa-users site-nav--icon"></i>About us</a>
</li>
<li>
<a href="javascript:void(0)"><i class="fas fa-download site-nav--icon"></i>Service</a>
</li>
<li>
<a href="javascript:void(0)"><i class="fas fa-globe site-nav--icon"></i>Blog</a>
</li>
<li>
<a href="javascript:void(0)"><i class="fas fa-phone site-nav--icon"></i>Contact us</a>
</li>
</ul>
</nav>
</div>
</section>
</header>
<!-- script for navigation menu -->
<script src="https://code.jquery.com/jquery-3.4.1.min.js" integrity="sha384-vk5WoKIaW/vJyUAd9n/wmopsmNhiy+L2Z+SBxGYnUkunIxVxAv/UtMOhba/xskxh" crossorigin="anonymous"></script>
<script src="js/01.js"></script>
</body>
</html>
JS
$.noConflict();
jQuery(document).ready(function ($)
{
$('.menu-toggle').click(function ()
{
$('ul').toggleClass('opening');
$(this).toggleClass('open');
});
});