header.php

<nav class="site-navigation position-relative text-right" role="navigation">

	<ul class="site-menu js-clone-nav mx-auto d-none d-lg-block">
		<li class="<?php echo $stmu ; ?>"><a href="home">Home</a></li>
		<li class="<?php echo $stmu ;?>"><a href="about">About Us</a></li>
		<li class="has-children">
			<a href="services.html">Services</a>
			<ul class="dropdown">
				<li class="<?php echo $stmu  ;?>"><a href="#">Air Freight</a></li>
				<li class="<?php echo $stmu  ;?>"><a href="#">Ocean Freight</a></li>
				<li class="<?php echo $stmu  ;?>"><a href="#">Ground Shipping</a></li>
				<li class="<?php echo $stmu  ;?>"><a href="#">Warehousing</a></li>
				<li class="<?php echo $stmu  ;?>"><a href="#">Storage</a></li>
			</ul>
		</li>
		<li class="<?php echo $stmu ;?>"><a href="industries.html">Industries</a></li>
		<li class="<?php echo $stmu ;?>"><a href="blog.html">Blog</a></li>
		<li class="<?php echo $stmu ;?>"><a href="contact.html">Contact</a></li>
	</ul>
</nav>