JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<body>
    <div id="navigation-menu">
        <nav>
            <ul>
                <li>	<a href="#">
					<span>Home</span>
				</a>

                </li>
                <li>	<a href="#">
					<span>About</span>
				</a>

                </li>
                <li>	<a href="#">
					<span>Portfolio</span>
				</a>

                </li>
                <li>	<a href="#">
					<span>Contact</span>
				</a>

                </li>
            </ul>
        </nav>
    </div>
</body>
<script src="http://code.jquery.com/jquery-1.10.2.min.js" type="text/javascript"></script>

CSS

@font-face {
    font-family:'Dosis';
    font-style: normal;
    font-weight: 400;
    src: local('Dosis Regular'), local('Dosis-Regular'), url(http://themes.googleusercontent.com/static/fonts/dosis/v1/xIAtSaglM8LZOYdGmG1JqQ.woff) format('woff');
}
body, div, h1, h2, h3, h4, h5, h6, p, ul, ol, li, dl, dt, dd, img, form, fieldset, input, textarea, blockquote {
    margin: 0;
    padding: 0;
    border: 0;
}
body {
    background: #ffffff;
}
#demo {
    margin: auto;
}
nav {
    position:fixed;
    left:0;
    top:20%;
    z-index:20;
    opacity:.80;
}
nav ul {
}
nav ul li {
    list-style: none;
    margin: 0 0 0 0;
}
nav ul li a {
    display: block;
    width: 120px;
    height: 120px;
    background-image: url(icons.png);
    background-repeat: no-repeat;
    text-decoration: none;
}
nav ul li:nth-child(1) a {
    background-color: #5bb2fc;
    background-position: 28px 28px;
}
nav ul li:nth-child(2) a {
    background-color: #58ebd3;
    background-position: 28px -96px;
}
nav ul li:nth-child(3) a {
    background-color: #ffa659;
    background-position: 28px -222px;
}
nav ul li:nth-child(4) a {
    background-color: #ff7a85;
    background-position: 28px -342px;
}
nav ul li a span {
    font: 30px"Dosis", sans-serif;
    text-transform: uppercase;
    position: relative;
    left: 120px;
    width: inherit;
    height: inherit;
    display: none;
    text-align: left;
}
nav ul li a:hover span {
    display: block;
    background-color: #000000;
}
nav ul li:nth-child(1) a span {
    color: #5bb2fc;
}
nav ul li:nth-child(2) a span {
    color: #58ebd3;
}
nav ul li:nth-child(3) a span {
    color: #ffa659;
}
nav ul li:nth-child(4) a span {
    color: #ff7a85;
}