JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>
<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/themes/smoothness/jquery-ui.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
    <div id="page">

        <nav id="topNav">
            <a  id="left" href="vocaloids.html">Vocaloids</a>
            <a href="about.html">About</a>
            <a href="contact.html">Contact</a>
        </nav>

    </div>

CSS

body, html {
    height: 100%;
    width: 100%;
    margin: 0;
}

#page {
    height: 100%;
    width: 100%;
    background-color: yellow;
    padding: 1%;
    background-image: url('images/background_image.jpg');
    background-repeat: no-repeat;
}

#topNav {
    border: 2px solid black;
    border-radius: 8px;
    margin-left: auto;
    margin-right: auto;
    width: 66%;
    text-align: center;
    background-size: cover;
    background-position: bottom left;
    background-repeat: no-repeat;
    background-color: #22756B;
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
    font-size: 2em;
}

nav a {
    display: inline-block;
    text-decoration: none;
    color: white;
    height: 100%;
    font-size: 20px;
    padding: 10px;
}


#topNav a:hover {
    border-radius: 8px;
    background-color: white;
    color: black;
}