<html>
    <head>
        <link href="https://unpkg.com/tailwindcss@^1.0/dist/tailwind.min.css" rel="stylesheet">
    </head>
    <body class="h-screen bg-gray-200 flex justify-center items-center p-6">
        
        <div class="bg-blue-900 text-blue-200 w-40 h-40 flex justify-center items-center">
            Here is a cool box
        </div>
        
    </body>
</html>

<html>

<head>

</head>

Here is a cool box

</div>

</body>

</html>

-5:54