<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Theme Switcher</title>
  <link rel="stylesheet" href="style.css" />
</head>
<body>
  <main class="container">
    <h1>Theme Switcher</h1>
    <p>Pick a theme to change the page appearance.</p>
    <div class="themes">
      <button class="theme-btn" data-theme="light">Light</button>
      <button class="theme-btn" data-theme="dark">Dark</button>
      <button class="theme-btn" data-theme="ocean">Ocean</button>
      <button class="theme-btn" data-theme="sunset">Sunset</button>
    </div>
  </main>
  <script src="script.js"></script>
</body>
</html>