JSFiddle - React, Tailwind, and code Playground

HTML

<div id="header">
    <h1>Davi Andrade</h1>
    <nav>
        <ul>
            <li><a href="/">About</a></li>
            <li><a href="/">Portfolio</a></li>
            <li><a href="/">Downloads</a></li>
            <li><a href="index.html">Home</a></li>
        </ul>
    </nav>
</div>
<div id="content">
    Text
</div>

CSS

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background-color: #3e3e3e;
    font-family: "Segoe UI", "Lucida Grande", sans-serif;
}

#header {
    background: #333333;
    overflow: hidden;
}

h1 {
    float: left;
    font-family: Megrim;
    text-transform: uppercase;
    font-size: 36px;
    margin: 18px 52px 18px 52px;
    color: #b6b6b6;
    text-shadow: 0 0 3px rgba(0, 18, 255, 0.8), 0 1px 2px rgba(0, 0, 0, 0.5);
}

nav li a {
    font-size: 1.3em;
    display: block;
    padding: 24px 48px 24px 0;
    float: right;
    color: white;
    list-style: none;
    text-decoration: none;
}

#content {
    box-shadow: 0 -2px 3px rgba(0,0,0,0.35), 0 -1px 0 rgba(255,255,255,0.3);
}