sm @media (min-width: 640px)
md @media (min-width: 768px)
lg @media (min-width: 1024px)
xl @media (min-width: 1280px)
2xl @media (min-width: 1536px)
dark @media (prefers-color-scheme: dark)
<!DOCTYPE html>
<html lang="ko">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>tailwindcss</title>
    <script src="https://cdn.tailwindcss.com"></script>
</head>
<body>
    <!-- https://tailwindcss.com/docs/hover-focus-and-other-states#media-queries -->
    <div class="w-16 h-16 bg-red-300 sm:w-20 sm:h-20 sm:bg-blue-300 md:w-32 md:h-32 md:bg-green-300">
        hello world
    </div>
    <div class="landscape:hidden">
        <p>
        This experience is designed to be viewed in landscape. Please rotate your
        device to view the site.
        </p>
    </div>
    <!-- https://play.tailwindcss.com/에서 config 수정 후 가능합니다. -->
    <div class="dark">
        <div class="bg-white dark:bg-slate-900 rounded-lg px-6 py-8 ring-1 ring-slate-900/5 shadow-xl">
            <div>
            <span class="inline-flex items-center justify-center p-2 bg-indigo-500 rounded-md shadow-lg">
                <svg class="h-6 w-6 text-white" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="currentColor" aria-hidden="true"><!-- ... --></svg>
            </span>
            </div>
            <h3 class="text-slate-900 dark:text-white mt-5 text-base font-medium tracking-tight">Writes Upside-Down</h3>
            <p class="text-slate-500 dark:text-slate-400 mt-2 text-sm">
            The Zero Gravity Pen can be used to write in any orientation, including upside-down. It even works in outer space.
            </p>
        </div>
    </div>
</body>
</html>