JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<link rel="stylesheet" href="style.css">
</head>
<body>
	<div class="header">
		<div class="logo"></div>
		<div class="menu"></div>
	</div>
	<div class="main">
		<div class="left"></div>
		<div class="center"></div>
		<div class="right"></div>
	</div>	
</body>
</html>

CSS

body{margin:0}

.header {
	width: 100%; height: 300px;
	background: green;
	
}
.logo {
	width: 20px; height: 20ps;
	background: white;
	
}
.menu {
	width: 100%; height: 20px;
	background: orange;
}