JSFiddle - React, Tailwind, and code Playground

HTML

<nav id="menu-wrap"><div id="SpaceTop" ></div>    
	<ul id="menu">
		<li><a href="http://www.red-team-design.com/">Home</a></li>

		<li>
			<a href="">Categories</a>
			<ul>
				<li>
					<a href="">CSS</a>
					<ul>
						<li><a href="">Item 11</a></li>

						<li><a href="">Item 12</a></li>
						<li><a href="">Item 13</a></li>
						<li><a href="">Item 14</a></li>
					</ul>				
				</li>
				<li>
					<a href="">Graphic design</a>

					<ul>
						<li><a href="">Item 21</a></li>
						<li><a href="">Item 22</a></li>
						<li><a href="">Item 23</a></li>
						<li><a href="">Item 24</a></li>
					</ul>				
				</li>

				<li>
					<a href="">Development tools</a>
					<ul>
						<li><a href="">Item 31</a></li>
						<li><a href="">Item 32</a></li>
						<li><a href="">Item 33</a></li>
						<li><a href="">Item 34</a></li>

					</ul>				
				</li>
				<li>
					<a href="">Web design</a>				
					<ul>
						<li><a href="">Item 41</a></li>
						<li><a href="">Item 42</a></li>
						<li><a href="">Item 43</a></li>

						<li><a href="">Item 44</a></li>
					</ul>	
				</li>
			</ul>
		</li>
		<li>
			<a href="">Work</a>
			<ul>

				<li>
					<a href="">Work 1</a>
					<ul>
						<li>
							<a href="">Work 11</a>		
							<ul>
								<li><a href="">Work 111</a></li>
								<li><a href="">Work 112</a></li>

								<li><a href="">Work 113</a></li>
							</ul>							
						</li>
						<li>
							<a href="">Work 12</a>
							<ul>
								<li><a href="">Work 121</a></li>
								<li><a href="">Work 122</a></li>

								<li><a href="">Work 123</a></li>
							</ul>							
						</li>
						<li>
							<a href="">Work 13</a>
							<ul>
								<li><a href="">Work 131</a></li>
								<li><a href="">Work 132</a></li>

								<li><a href="">Work 133</a></li>
							</ul>							
						</li>
					</ul>					
				</li>
				<li>
					<a href="">Work 2</a>
					<ul>
						<li>

							<a href="">Work 21</a>
							<ul>
								<li><a href="">Work...

CSS

#SpaceTop
	{
	width:100%;
	height 100px;
	}
	
	/* You don't need the above styles, they are demo-specific ----------- */
	
	#menu, #menu ul {
		margin: 0;
		padding: 0;
		list-style: none;
	}
	
	#menu {
		width: 960px;
		margin: 60px auto;
		border: 0px solid #222;
		background-color: #fff;
	}
	
	#menu:before,
	#menu:after {
		content: "";
		display: table;
	}
	
	#menu:after {
		clear: both;
	}
	
	#menu {
		/*zoom:1;*/
	}
	
	#menu li {
		float: left;
		border-right: 0px solid #222;
		position: relative;
	}
	
	#menu a {
		float: left;
		padding: 12px 30px;
		color: #000;
		text-transform: uppercase;
		font: bold 12px Arial, Helvetica;
		text-decoration: none;
		/*text-shadow: 0 1px 0 #000;*/
	}
	
	#menu li:hover > a {
		color: #12D92D;
	}
	
	*html #menu li a:hover { /* IE6 only */
		color: #fafafa;
	}
	
	#menu ul {
		margin: 20px 0 0 0;
		_margin: 0; /*IE6 only*/
		opacity: 0;
		visibility: hidden;
		position: absolute;
		top: 38px;
		left: 0;
		z-index: 1;    
		background: #444;
	}

	#menu li:hover > ul {
		opacity: 1;
		visibility: visible;
		margin: 0;
		/*add TOP & LEFT MARGIN*/
				margin-top:0px;
				margin-left:30px;
	}
	
	#menu ul ul {
		top: 0;
		left: 150px;
		margin: 0 0 0 20px;
		_margin: 0; /*IE6 only*/
		margin-left:40px;

	}
	
	#menu ul li {
		float: none;
		display: block;
		border: 0;
		_line-height: 0; /*IE6 only*/
	}
	
	#menu ul li:last-child {   
		-moz-box-shadow: none;
		-webkit-box-shadow: none;
		box-shadow: none;    
	}
	
	#menu ul a {    
		padding: 10px;
		width: 130px;
		_height: 10px; /*IE6 only*/
		display: block;
		white-space: nowrap;
		float: none;
		text-transform: none;
		color:#fff;
	}
	
	#menu ul a:hover {
		/*background-color: #0186ba; */
		color:#fff;
	}
	
	#menu ul li:first-child > a {
		-moz-border-radius: 3px 3px 0 0;
		-webkit-border-radius: 3px 3px 0 0;
		border-radius: 3px 3px 0 0;
		
	}
	
	/* Code to create TRIANGLE POINTER */
	#menu ul li:first-child > a:after {
		content: '';
		position: absolute;
		left:...