<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>My Tailwind CSS</title>
<script src="https://cdn.tailwindcss.com"></script>
</head>
<body>
<button class="bg-orange-400 text-white m-4 py-2 px-4 rounded-full shadow-black/30 shadow-md">
Buy now!
</button>
</body>
</html>