JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Metro Colors!</title>
	<link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
	<link rel="stylesheet" type="text/css" href="style.css">
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
	<link href='https://fonts.googleapis.com/css?family=Source+Sans+Pro:400,300,600,700' rel='stylesheet' type='text/css'>
</head>
<body>

<nav class="navbar navbar-default navbar-fixed-top">
  <div class="container">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="#">FLAT UI</a>
    </div>

    <!-- Collect the nav links, forms, and other content for toggling -->
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
      <ul class="nav navbar-nav">
        <li><a href="#">Home</a></li>
        <li><a href="#">About</a></li>
      </ul>
      <ul class="nav navbar-nav navbar-right">
        <li><a href="#">Singup</a></li>
        <li><a href="#">Login</a></li>
      </ul>
    </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
</nav>

<div class="section section-1">
	<div class="content content-1">
		<div class="container">
			<div class="row">
				<div class="col-lg-12">
					<h1>Hello there</h1>
					<h3>Classic bootstrap site, scroll down!</h3>
					<hr>
					<button class="btn btn-default btn-lg">Explore!</button>
				</div>
			</div>
		</div>
	</div>
</div>

<div class="section section-2">
	<div class="content content-2">
		<div...

CSS

body {
	font-family: 'Source Sans Pro', sans-serif;
	color: white;
}


.section {
	padding-top: 15%;
	height: 100vh;
}

.content {
	text-align: center;
}

.section-1 {
	background: #2ecc71;
}

.section-2 {
	background: #f1c40f;
}

.section-3 {
	background: #e74c3c;
}

.section-4 {
	background: #3498db;

}

.section-4 .btn {
	margin-top: 20px;
}

.btn-col {
	width: 20%;
}

.section-5 {
	background: #34495e;
	max-width: 100%;
}

.section-5 h1 {
	margin-bottom: 60px;
}




hr {
	width: 25%;
	text-shadow: 0px 2px 1px rgba(0,0,0,0.2);
}

h1 {
	font-size: 5em;
	font-weight: 600;
}

h1, h3 {
	text-shadow: 0px 2px 1px rgba(0,0,0,0.2);
}