JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://tympanus.net/Development/FullscreenOverlayStyles/css/normalize.css">
<link rel="stylesheet" href="http://tympanus.net/Development/FullscreenOverlayStyles/css/demo.css">
<link rel="stylesheet" href="http://tympanus.net/Development/FullscreenOverlayStyles/css/style1.css">
<script src="http://tympanus.net/Development/FullscreenOverlayStyles/js/modernizr.custom.js"></script>
<link rel="stylesheet" href="http://tympanus.net/Development/FullscreenOverlayStyles/css/style3.css">
  



	 
	<body>
        <section>
				<p><button id="trigger-overlay" type="button">Open Overlay</button></p>
		</section>
         <p>Overlay simply slides down with the content.</p>
	     <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        <p>Overlay simply slides down with the content.</p>
        
		<div class="overlay overlay-slidedown">
			<button type="button" class="overlay-close">Close</button>
			<nav>
				<ul>
					<li><a href="#">Home</a></li>
					<li><a href="#">About</a></li>
					<li><a href="#">Work</a></li>
					<li><a href="#">Clients</a></li>
					<li><a href="#">Contact1</a></li>
                    <li><a...