JSFiddle - React, Tailwind, and code Playground

HTML

<div id="cssmenu">
    <ul>
		<li><a href="#"><span>Home</span></a></li>
		<li><a href="#"><span>Products</span></a>
			<ul>
				<li><a href="#">Widgets</a></li>
				<li><a href="#">Menus</a></li>
				<li><a href="#">Products</a></li>
			</ul>
		</li>
		<li><a href="#"><span>Company</span></a>
			<ul>
				<li><a href="#">About</a></li>
				<li><a href="#">Location</a></li>
			</ul>
		</li>
		<li><a href="#"><span>Contact</span></a></li>
	</ul>
</div>

CSS

@import url(http://fonts.googleapis.com/css?family=Ubuntu:300,400,500,700);
@import url(http://fonts.googleapis.com/css?family=Open+Sans:400,600,300);

/* Base Styles */
#cssmenu,
#cssmenu ul,
#cssmenu li,
#cssmenu a {
	margin: 0;
	padding: 0;
	border: 0;
	list-style: none;
	font-weight: normal;
	text-decoration: none;
	line-height: 1;
	font-family: 'Open Sans', sans-serif;
	font-size: 1em;
	position: relative;
}
#cssmenu a {
	line-height: 1.3;
}
#cssmenu {
	width: 250px;
	border-bottom: 4px solid #656659;
	-webkit-border-radius: 3px;
	-moz-border-radius: 3px;
	border-radius: 3px;
}
#cssmenu > ul > li:first-child {
	background: #66665e;
	background: -moz-linear-gradient(#66665e 0%, #45463d 100%);
	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #66665e), color-stop(100%, #45463d));
	background: -webkit-linear-gradient(#66665e 0%, #45463d 100%);
	background: linear-gradient(#66665e 0%, #45463d 100%);
	border: 1px solid #45463d;
	-webkit-border-radius: 3px 3px 0 0;
	-moz-border-radius: 3px 3px 0 0;
	border-radius: 3px 3px 0 0;
}
#cssmenu > ul > li:first-child > a {
	padding: 15px 10px;
	background: url(pattern.png) top left repeat;
	border: none;
	border-top: 1px solid #818176;
	-webkit-border-radius: 3px 3px 0 0;
	-moz-border-radius: 3px 3px 0 0;
	border-radius: 3px 3px 0 0;
	font-family: 'Ubuntu', sans-serif;
	text-align: center;
	font-size: 1.2em;
	font-weight: 300;
	text-shadow: 0 -1px 1px #000000;
}
#cssmenu > ul > li:first-child > a > span {
	padding: 0;
}
#cssmenu > ul > li:first-child:hover {
	background: #66665e;
	background: -moz-linear-gradient(#66665e 0%, #45463d 100%);
	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #66665e), color-stop(100%, #45463d));
	background: -webkit-linear-gradient(#66665e 0%, #45463d 100%);
	background: linear-gradient(#66665e 0%, #45463d 100%);
}
#cssmenu > ul > li {
	background: #e94f31;
	background: -moz-linear-gradient(#e94f31 0%, #d13516 100%);
	background:...

JavaScript

$(document).ready(function(){

	// Custom jQuery code goes here
    $('#cssmenu > ul > li:has(ul)').addClass("has-sub");
    $('#cssmenu > ul > li > a').click(function() {

	var checkElement = $(this).next();

	$('#cssmenu li').removeClass('active');
	$(this).closest('li').addClass('active');	

	if((checkElement.is('ul')) && (checkElement.is(':visible'))) {
		$(this).closest('li').removeClass('active');
		checkElement.slideUp('normal');
	}

	if((checkElement.is('ul')) && (!checkElement.is(':visible'))) {
		$('#cssmenu ul ul:visible').slideUp('normal');
		checkElement.slideDown('normal');
	}

	if (checkElement.is('ul')) {
		return false;
	} else {
		return true;	
	}
});

});