Un code pour un menu moderne dans un seul fichier

On 05/04/202314/12/2023By Stéphane GOURBEILLE
Voici le résultat
Voici le code

<!DOCTYPE html>
<html>
<style>
  nav.menu {
    display: flex;
    justify-content: center;
    background-color: #222;
    font-size: 0;
    position: relative;
  }

  nav.menu ul {
    display: inline-block;
    margin: 0;
    padding: 0;
  }

  nav.menu li {
    display: inline-block;
    position: relative;
    margin-right: 20px;
  }

  nav.menu a {
    display: block;
    color: #fff;
    text-align: center;
    padding: 10px 20px;
    text-decoration: none;
    font-size: 16px;
    font-weight: bold;
  }

  nav.menu ul ul {
    position: absolute;
    top: 100%;
    left: 0;
    display: none;
    background-color: #222;
  }

  nav.menu ul ul li {
    display: block;
    width: 200px;
    white-space: nowrap;
  }

  nav.menu ul ul a {
    padding: 10px 20px;
  }

  nav.menu ul li:hover > ul {
    display: block;
  }

  nav.menu ul ul ul {
    position: absolute;
    left: 100%;
    top: 0;
  }

  nav.menu ul ul ul li {
    display: block;
    width: 200px;
    white-space: nowrap;
  }

  nav.menu ul ul ul a {
    padding: 10px 20px;
  }
</style>

<nav class="menu">
  <ul>
    <li><a href="#">Accueil</a></li>
    <li><a href="#">À propos</a>
      <ul>
        <li><a href="#">Notre histoire</a></li>
        <li><a href="#">Notre équipe</a></li>
        <li><a href="#">Nos clients</a></li>
      </ul>
    </li>
    <li><a href="#">Services</a>
      <ul>
        <li><a href="#">Service 1</a></li>
        <li><a href="#">Service 2</a></li>
        <li><a href="#">Service 3</a></li>
      </ul>
    </li>
    <li><a href="#">Portfolio</a></li>
    <li><a href="#">Contact</a></li>
  </ul>
</nav>

<script>
  const dropdowns = document.querySelectorAll('nav ul li > ul');

  dropdowns.forEach(dropdown => {
    const dropdownToggle = dropdown.previousElementSibling;
    dropdownToggle.addEventListener('click', function() {
      const isActive = dropdown.classList.contains('active');
      dropdowns.forEach(dropdown => dropdown.classList.remove('active'));
      if (!isActive) {
        dropdown.classList.add('active');
      }
    });
  });

  window.addEventListener('click', function(e) {
    if (!e.target.matches('nav ul li > a')) {
      dropdowns.forEach(dropdown => dropdown.classList.remove('active'));
    }
  });
</script>

</html>