<header>
  <div class="logo">Logo</div>
  <nav>
    <button popovertarget="menu">Menu</button>
    <ul popover id="menu">
      <li><a href="/">Home</a></li>
      <li><a href="/about">About</a></li>
      <li><a href="/contact">Contact</a></li>
    </ul>
  </nav>
</header>

<main>
  <h1>Welcome to the website</h1>
  <p>This is a simple page to demonstrate anchor positioning.</p>
</main>