Многоуровневая навигационная панель и мегаменю с темной темой

Иногда нужно применить некоторые компоненты bootstrap у себя на сайте. Но впихивать все стили и скрипты как то не хочется. Конечно можно сделать как я и долго мучиться вырезая ненужные скрипты. И вот в поисках навигационного бара от бутстрап наткнулся как всегда в буржу-нете на уже готовую многоуровневую навигационную панель версии 5.3.0 с мегаменю и тёмной темой. Никаких лишних скриптов, стилей. Если, что то нужно подправить то это уже не займёт много времени. Код представлен ниже.

HTML

<!--
(c) 2020-2023 by Simon Köhler
simonkoehler.com
Last Update: August 13 2023 11:48 am, Panama
-->

<nav class="navbar navbar-expand-lg shadow">
    <div class="container-fluid">
      <a class="navbar-brand" href="#">Bootstrap <span class="badge bg-primary fw-bold">version 5.3.0</span></a>
      <button class="navbar-toggler collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#navbar-content">
        <div class="hamburger-toggle">
          <div class="hamburger">
            <span></span>
            <span></span>
            <span></span>
          </div>
        </div>
      </button>
      <div class="collapse navbar-collapse" id="navbar-content">
        <ul class="navbar-nav mr-auto mb-2 mb-lg-0">
          <li class="nav-item">
            <a class="nav-link active" aria-current="page" href="#">Home</a>
          </li>
          <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="#" data-bs-toggle="dropdown" data-bs-auto-close="outside">Multilevel</a>
            <ul class="dropdown-menu shadow">
              <li><a class="dropdown-item" href="#">Gallery</a></li>
              <li><a class="dropdown-item" href="blog.html">Blog</a></li>
              <li class="dropstart">
                <a href="#" class="dropdown-item dropdown-toggle" data-bs-toggle="dropdown">Submenu Left</a>
                <ul class="dropdown-menu shadow">
                  <li><a class="dropdown-item" href=""> Third level 1</a></li>
                  <li><a class="dropdown-item" href=""> Third level 2</a></li>
                  <li><a class="dropdown-item" href=""> Third level 3</a></li>
                  <li><a class="dropdown-item" href=""> Third level 4</a></li>
                  <li><a class="dropdown-item" href=""> Third level 5</a></li>
                </ul>
              </li>
              <li class="dropend">
                <a href="#" class="dropdown-item dropdown-toggle" data-bs-toggle="dropdown" data-bs-auto-close="outside">Submenu Right</a>
                <ul class="dropdown-menu shadow">
                  <li><a class="dropdown-item" href=""> Second level 1</a></li>
                  <li><a class="dropdown-item" href=""> Second level 2</a></li>
                  <li><a class="dropdown-item" href=""> Second level 3</a></li>
                  <li class="dropend">
                    <a href="#" class="dropdown-item dropdown-toggle" data-bs-toggle="dropdown" data-bs-auto-close="outside">Let's go deeper!</a>
                    <ul class="dropdown-menu dropdown-submenu shadow">
                      <li><a class="dropdown-item" href=""> Third level 1</a></li>
                      <li><a class="dropdown-item" href=""> Third level 2</a></li>
                      <li><a class="dropdown-item" href=""> Third level 3</a></li>
                      <li><a class="dropdown-item" href=""> Third level 4</a></li>
                      <li class="dropend">
                        <a href="#" class="dropdown-item dropdown-toggle" data-bs-toggle="dropdown">Still don't have enough? Go much deeper!</a>
                        <ul class="dropdown-menu dropdown-submenu shadow">
                          <li><a class="dropdown-item" href=""> Third level 1</a></li>
                          <li><a class="dropdown-item" href=""> Third level 2</a></li>
                          <li><a class="dropdown-item" href=""> Third level 3</a></li>
                          <li><a class="dropdown-item" href=""> Third level 4</a></li>
                          <li><a class="dropdown-item" href=""> Third level 5</a></li>
                        </ul>
                      </li>
                    </ul>
                  </li>
                  <li><a class="dropdown-item" href=""> Third level 5</a></li>
                </ul>
              </li>
              <li><hr class="dropdown-divider"></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
            </ul>
          </li>
          <li class="nav-item">
            <a class="nav-link" href="#">Link</a>
          </li>
          <li class="nav-item dropdown dropdown-mega position-static">
            <a class="nav-link dropdown-toggle" href="#" data-bs-toggle="dropdown" data-bs-auto-close="outside">Megamenu</a>
            <div class="dropdown-menu shadow">
              <div class="mega-content px-4">
                <div class="container-fluid">
                  <div class="row">
                    <div class="col-12 col-sm-4 col-md-3 py-4">
                      <h5>Pages</h5>
                      <div class="list-group">
                        <a class="list-group-item" href="#">Accomodations</a>
                        <a class="list-group-item" href="#">Terms & Conditions</a>
                        <a class="list-group-item" href="#">Privacy</a>
                      </div>
                    </div>
                    <div class="col-12 col-sm-4 col-md-3 py-4">
                      <h5>Card</h5>
                      <div class="card">
                  <img src="https://via.placeholder.com/320x180" class="img-fluid" alt="image">
                  <div class="card-body">
                    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
                  </div>
                </div>
                    </div>
                    <div class="col-12 col-sm-4 col-md-3 py-4">
                      <h5>Lot of Pages</h5>
                      <p>Lorem ipsum dolo sit achmet muhamed borlan de irtka.
                    </div>
                    <div class="col-12 col-sm-12 col-md-3 py-4">
                      <h5>Damn, so many</h5>
                      <div class="list-group">
                        <a class="list-group-item" href="#">Accomodations</a>
                        <a class="list-group-item" href="#">Terms & Conditions</a>
                        <a class="list-group-item" href="#">Privacy</a>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
            </div>
          </li>
          <li class="nav-item">
            <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
          </li>
        </ul>
        <ul class="navbar-nav ms-auto">
          <li class="nav-item">
            <a class="nav-link" href="#" tabindex="-1" data-bs-toggle-theme="true" aria-disabled="true"><i class="fa fa-adjust"></i></a>
          </li>
        </ul>
        <form class="d-flex">
            <div class="input-group">
                <input class="form-control mr-2" type="search" placeholder="Search" aria-label="Search">
                <button class="btn btn-primary border-0" type="submit">Search</button>
            </div>
        </form>
      </div>
    </div>
  </nav>

  <section class="my-5">
    <div class="container">
      <div class="p-4 border">
        <h1>Bootstrap <span class="text-primary">5.3.0</span> Navbar Multi Level and Mega Menu</h1>
        <p class="lead">This example shows a Navbar component of the Bootstrap Framework version 5 with the following features:</p>
        <ul>
            <li>No extra JavaSript required</li>
            <li>Multi Level Menu</li>
            <li>Responsive Mega Menu</li>
            <li>Unlimited Levels possible!</li>
            <li>Animated Hamburger Menu for Mobile Devices (with jаvascript)</li>
        </ul>
        <div class="alert alert-info"><strong>Updated August 13 2023:</strong> Now compatible with Bootstrap 5.3.0 and support for <strong>Dark / Light Theme added. See Navbar!</strong></div>
    </div>
    </div>
  </section>

  <footer class="bg-dark p-4 text-white text-center">
    <small>&copy; 2020-2023 Written by <a href="https://simonkoehler.com/ref/codepen" target="_blank" class="link-light" title="Check my Website">Simon Köhler</a></small>
    <div class="icons">
        <a href="https://blog.simonkoehler.com/" target="_blank">
              <i class="fa fa-globe"></i>
            </a>
        <a href="https://www.linkedin.com/in/koehlersimon/" target="_blank">
              <i class="fab fa-linkedin"></i>
            </a>
        <a href="https://x.com/koehlersimon" target="_blank">
              <i class="fab fa-twitter"></i>
            </a>
        
        <a href="https://www.youtube.com/channel/UC_PtQESDvj-GZNeo9LarRuA?view_as=subscriber" target="_blank">
              <i class="fab fa-youtube"></i>
            </a>
      </div>
  </footer>
 

CSS(SCSS)

// (c) 2020-2023 by Simon Köhler
// simonkoehler.com

// Setting the font family for this example
*{
  font-family: "Poppins", "Roboto", Arial, sans-serif;
}

// Animation to fade in the dropdown menus
@keyframes fadeIn {
    from {opacity: 0;}
    to {opacity: 1;}
}

// Assigning the above animation to all dropdown menus
.dropdown-menu{
    &.show{
        -webkit-animation: fadeIn 0.3s alternate; /* Safari 4.0 - 8.0 */
         animation: fadeIn 0.3s alternate;
    }
}

// Mega Menu adjustments
.nav-item.dropdown.dropdown-mega{
    position: static;
    .dropdown-menu{
        width: 90%;
        top: auto;
        left: 5%;
    }
}

// Complete styles for main navbar toggler and hamburger menu
.navbar-toggler{
    border: none;
    padding: 0;
    outline: none;
    &:focus{
        box-shadow: none;
    }
    .hamburger-toggle{
        position: relative;
        display: inline-block;
        width: 50px;
        height: 50px;
        z-index: 11;
        float: right;
        .hamburger {
            position: absolute;
            transform: translate(-50%, -50%) rotate(0deg);
            left: 50%;
            top: 50%;
            width: 50%;
            height: 50%;
            pointer-events: none;
            span {
                width: 100%;
                height: 4px;
                position: absolute;
                background: #333;
                border-radius: 2px;
                z-index: 1;
                transition: transform 0.2s cubic-bezier(0.77,0.2,0.05,1.0), background 0.2s cubic-bezier(0.77,0.2,0.05,1.0), all 0.2s ease-in-out;
                left: 0px;
                &:first-child{
                    top: 10%;
                    transform-origin: 50% 50%;
                    transform: translate(0% -50%) !important;
                }
                &:nth-child(2){
                    top: 50%;
                    transform: translate(0,-50%);
                }
                &:last-child{
                    left: 0px;
                    top: auto;
                    bottom: 10%;
                    transform-origin: 50% 50%;
                }
            }
            &.active{
                span {
                    position: absolute;
                    margin: 0;
                    &:first-child{
                        top: 45%;
                        transform: rotate(45deg);
                    }
                    &:nth-child(2){
                        left: 50%;
                        width: 0px;
                    }
                    &:last-child{
                        top: 45%;
                        transform: rotate(-45deg);
                    }
                }
            }
        }
    }
}


.icons{
  display: inline-flex;
  margin-left: auto;
  a{
    transition: all 0.2s ease-in-out;
    padding: 0.2rem 0.4rem;
    color: #ccc !important;
    text-decoration: none;
    &:hover{
      color: white;
      text-shadow: 0 0 30px white;
    }
  }
}

JS

// (c) 2020-2023 Written by Simon Köhler in Panama
// simonkoehler.com

// Wait for the DOM (Document Object Model) to be fully loaded
document.addEventListener('DOMContentLoaded', function(event) {

  // Hamburger menu
  var navbarToggler = document.querySelectorAll('.navbar-toggler')[0];
  navbarToggler.addEventListener('click', function(e) {
    e.target.children[0].classList.toggle('active');
  });

  // Select the <html> element
  var html = document.querySelectorAll('html')[0];

  // Select the first element with the attribute 'data-bs-toggle-theme'
  var themeToggle = document.querySelectorAll('*[data-bs-toggle-theme]')[0];

  // Set the default theme to 'dark' for the <html> element
  html.setAttribute('data-bs-theme', 'dark');

  // Check if a themeToggle element is found
  if (themeToggle) {
    // Add a click event listener to the themeToggle element
    themeToggle.addEventListener('click', function(event) {
      // Prevent the default behavior of the click event
      event.preventDefault();

      // Check the current theme attribute value of the <html> element
      if (html.getAttribute('data-bs-theme') === 'dark') {
        // If the current theme is 'dark', change it to 'light'
        html.setAttribute('data-bs-theme', 'light');
      } else {
        // If the current theme is not 'dark', change it back to 'dark'
        html.setAttribute('data-bs-theme', 'dark');
      }
    });
  }
});