JSFiddle - React, Tailwind, and code Playground

HTML

<body>
<section id="container">
    <header>This is your header</header>
    <section id="main">This is #main</section>
    <footer>This is your footer</footer>
</section>
</body>

CSS

body {background:#999;}
#container {background:#ff0;width:100%;}
header {}
#main {}
footer {background:#999;}