October 27, 2024
Chicago 12, Melborne City, USA
CSS

In a navbar how can I extend the dropdown menu horizontally across the width of the page container?


Currently, when I hover over an item in the navbar, a horizontal drop-down menu opens like this (note the width of the drop-down menu):
enter image description here

What would I like to achieve?

I would like to widen the dropdown menu horizontally like in the next photo, but only desktop version. I would like the dropdown menu to be as wide as the container (the one that Bootstrap already uses with the container class) that I am already using in my navbar and that I will also use throughout the body of the site.

In the photo (photomontage/collage) I am inspecting the navbar with Chrome so as to highlight the navbar container to give you an idea of ​​how wide I would like the dropdown menu to be.
enter image description here

Can you help me and show me how to get it? I have tried several attempts, but I failed.

document.addEventListener("DOMContentLoaded", function() {
  const dropdowns = document.querySelectorAll(".nav-item.dropdown");

  dropdowns.forEach(dropdown => {
    dropdown.addEventListener("mouseenter", function() {
      const menu = this.querySelector(".dropdown-menu-horizontal");
      if (menu) menu.style.display = "flex";
    });

    dropdown.addEventListener("mouseleave", function() {
      const menu = this.querySelector(".dropdown-menu-horizontal");
      if (menu) menu.style.display = "none";
    });
  });
});
* {
  box-sizing: border-box;
}


/* Navbar */

.navbar {
  background-color: #000033;
  padding: 0 !important;
  /* Imposta il padding verticale invece dell'altezza */
  display: flex;
  align-items: center;
  position: relative;
  z-index: 1000;
  box-sizing: border-box;
}


/* Stile logo e testo del brand */

.logo {
  height: 80px;
  margin-right: 10px;
}

.brand-text {
  color: #ffffff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: left;
  line-height: 1;
}

.fondazione {
  font-size: 0.80em;
  font-weight: normal;
  letter-spacing: 0.28em;
}

.surname {
  font-size: 2.4rem;
  font-weight: bold;
  letter-spacing: 0.05em;
}


/* Rettangolino colorato sotto le voci della navbar */

.navbar-nav .nav-link {
  color: #ffffff;
  margin-right: 10px;
  padding: 0 10px;
  /* Gestisce lo spazio tra i link */
  line-height: normal;
  /* Usa la line-height di default */
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.navbar-nav .nav-link:hover::after {
  content: '';
  display: block;
  width: 100%;
  height: 3px;
  /* Altezza del rettangolo */
  background-color: #459439;
  position: absolute;
  bottom: 0;
  /* Allineato al bordo inferiore */
  left: 0;
  z-index: 1000;
}


/* Rimozione della freccia dropdown */

.nav-link.dropdown-toggle::after {
  display: none;
}


/* Dropdown orizzontale */

.dropdown-menu-horizontal {
  display: none;
  background-color: #000033 !important;
  padding: 20px !important;
  min-width: 100%;
  border-radius: 0;
  position: absolute;
  left: 0;
  top: 97% !important;
  z-index: 9999;
}

.dropdown-item-horizontal {
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  margin-right: 30px;
  white-space: nowrap;
}

.dropdown-item-horizontal img {
  width: 50px;
  height: 50px;
  margin-right: 15px;
}

.dropdown-item-horizontal:hover {
  color: #d4d4ff;
  text-decoration: none;
}


/* Mostra il menu a tendina al passaggio del mouse */

.nav-item:hover .dropdown-menu-horizontal {
  display: flex;
  justify-content: space-around;
}


/* Responsive per dispositivi mobili */

@media (max-width: 768px) {
  .navbar-expand-md .navbar-nav .nav-link {
    padding-top: 20px;
    padding-bottom: 20px;
  }
}
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">

<!-- Navbar con logo e link -->
<nav class="navbar navbar-expand-md navbar-dark mb-0">
  <div class="container align-items-stretch">
    <a class="navbar-brand d-flex align-items-center" href="#">
      <img src="img/..." alt="Logo" class="logo">
      <div class="brand-text">
        <span class="fondazione">AAAAAAA</span>
        <span class="surname">XXXX</span>
      </div>
    </a>
    <button class="navbar-toggler align-self-center" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
                <span class="navbar-toggler-icon"></span>
            </button>
    <div class="collapse navbar-collapse" id="navbarNav">
      <ul class="navbar-nav ml-auto h-100">
        <li class="nav-item dropdown">
          <a class="nav-link" href="#" id="fondazioneDropdown">COMPANY</a>
          <div class="dropdown-menu dropdown-menu-horizontal" aria-labelledby="fondazioneDropdown">
            <a class="dropdown-item-horizontal" href="#"><img src="..." alt="Logo 1"> Example 1</a>
            <a class="dropdown-item-horizontal" href="#"><img src="..." alt="Logo 2"> Example 2</a>
            <a class="dropdown-item-horizontal" href="#"><img src="..." alt="Logo 3"> Example 3</a>
          </div>
        </li>
        <li class="nav-item"><a class="nav-link" href="#">Item 2</a></li>
        <li class="nav-item"><a class="nav-link" href="#">Item 3</a></li>
        <li class="nav-item"><a class="nav-link" href="#">Item 4</a></li>
        <li class="nav-item"><a class="nav-link" href="#">Item 5</a></li>
        <li class="nav-item"><a class="nav-link" href="#">Item 6</a></li>
        <li class="nav-item"><a class="nav-link" href="#">Item 7</a></li>
        <li class="nav-item"><a class="nav-link" href="#">Item 8</a></li>
      </ul>
    </div>
  </div>
</nav>

<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.9.2/dist/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>



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