JSFiddle - React, Tailwind, and code Playground

HTML

<div class="sTop"></div>
<nav>Nav here</nav>
<section></section>

CSS

html, body {
    height: 100%;
    width: 100%;
    margin: 0;
}
nav {height: 100px; background: blue;}
.sTop {
    height: 100%;
    width: 100%;
    background: url('http://3.bp.blogspot.com/-rfPNmOhITdE/UkbVyeTlM1I/AAAAAAAAK84/xZtxehREdXw/s1600/Screen+Shot+2013-09-28+at+3.10.52+PM.png') center no-repeat black;
}

section {
    height: 100%;
}