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Responsive Fixed Off-canvas Menu with jQuery and CSS3

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Chrome, IE9+, FireFox, Opera, Safari#Drop Down Menu#off canvas menu#mobile menu#toggle menu
Responsive Fixed Off-canvas Menu with jQuery and CSS3

A small JQuery script that transforms a regular multi-level dropdown menu into a fixed navigation bar with a toggle icon on mobile devices. When you click on the toggle icon, an off-canvas menu slides out from the left hand side of your browser with a smooth CSS3 transition effect.

How to use it:

1. Create a regular multi-level dropdown navigation with a mobile menu toggle button.

<nav class="nav is-fixed" role="navigation">
  <button class="nav-toggle">
  <div class="icon-menu"> <span class="line line-1"></span> <span class="line line-2"></span> <span class="line line-3"></span> </div>
  </button>
  <div class="nav-container">
    <ul class="nav-menu menu">
      <li class="menu-item has-dropdown"> <a href="#!" class="menu-link">Home</a>
        <ul class="nav-dropdown menu">
          <li class="menu-item"> <a href="#!" class="menu-link">jQuery</a> </li>
          <li class="menu-item has-dropdown"> <a href="#!" class="menu-link">Front-end</a>
            <ul class="nav-dropdown menu">
              <li class="menu-item"><a href="#!" class="menu-link">Html5</a></li>
              <li class="menu-item"><a href="#!" class="menu-link">CSS3</a></li>
              <li class="menu-item"><a href="#!" class="menu-link">Javascript</a></li>
            </ul>
          </li>
          <li class="menu-item"> <a href="#!" class="menu-link">jQueryScript</a> </li>
        </ul>
      </li>
      <li class="menu-item"> <a href="#!" class="menu-link">Blog</a> </li>
      <li class="menu-item"> <a href="#!" class="menu-link">Contact</a> </li>
      <li class="menu-item"> <a href="#!" class="menu-link">About</a> </li>
    </ul>
  </div>
</nav>

2. Add the following CSS/CSS3 snippets to style the navigation.

.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 10000;
  background-color: #efefef;
}

.nav-container {
  position: fixed;
  top: 60px;
  left: 0;
  z-index: 9999;
  overflow-y: auto;
  visibility: hidden;
  width: 100%;
  height: 100%;
  min-height: 100%;
  margin: 0;
  padding: 0;
  -webkit-transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1) 0s;
  transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1) 0s;
  -webkit-transform: translateX(-100%);
  -ms-transform: translateX(-100%);
  transform: translateX(-100%);
  background-color: #c0c0c0;
  -webkit-overflow-scrolling: touch;
}

.nav-container.is-visible {
  visibility: visible;
  -webkit-transform: translateX(0);
  -ms-transform: translateX(0);
  transform: translateX(0);
}

.nav-toggle {
  line-height: 1;
  display: inline-block;
  padding: 1.25rem 1rem;
  border: 0;
  background-color: #e74c3c;
}

.nav-toggle .icon-menu {
  position: relative;
  display: inline-block;
  width: 28px;
  height: 20px;
  vertical-align: middle;
  fill: none;
}

.icon-menu .line {
  position: absolute;
  left: 0;
  display: block;
  width: 100%;
  height: 4px;
  -webkit-transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1.000);
  transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1.000);
  -webkit-transition-timing-function: cubic-bezier(0.645, 0.045, 0.355, 1.000);
  transition-timing-function: cubic-bezier(0.645, 0.045, 0.355, 1.000);
  background-color: #fff;
}

.icon-menu .line-1 { top: 0; }

.is-active .icon-menu .line-1 {
  -webkit-transform: translateY(8px) translateX(0) rotate(45deg);
  -ms-transform: translateY(8px) translateX(0) rotate(45deg);
  transform: translateY(8px) translateX(0) rotate(45deg);
}

.icon-menu .line-2 {
  top: 50%;
  margin-top: -2px;
}

.is-active .icon-menu .line-2 { opacity: 0; }

.icon-menu .line-3 { bottom: 0; }

.is-active .icon-menu .line-3 {
  -webkit-transform: translateY(-8px) translateX(0) rotate(-45deg);
  -ms-transform: translateY(-8px) translateX(0) rotate(-45deg);
  transform: translateY(-8px) translateX(0) rotate(-45deg);
}

.menu {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu {
  background-color: #dedede; /* 1 */
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;         /* 2 */
}

.nav-menu .menu-item { border-top: 1px solid #bbb; }

.nav-menu > .menu-item:last-child { border-bottom: 1px solid #bbb; }

.nav-menu > .menu-item:hover,
.nav-menu > .menu-item.is-active { background-color: #d0d0d0; }

.nav-menu .menu-link {
  display: block; /* 1 */
  text-decoration: none;
  color: #444;
  padding: 0.75rem 1rem;
}

.has-dropdown {
  position: relative;
  cursor: pointer;
}

.has-dropdown > .menu-link { display: inline-block; }

.has-dropdown:after {
  font-size: 32px;
  position: absolute;
  top: 0;
  right: 1rem;
  bottom: 0;
  content: "+";
  color: #222;
}

.has-dropdown.is-active:after { content: "\2013"; /* 1 */ }

.nav-dropdown {
  display: none;
  background-color: #c0c0c0;
}

.has-dropdown.is-active > .nav-dropdown { display: block; /* 1 */ }

.nav-dropdown .nav-dropdown { background-color: #aaa; }

.nav-dropdown .menu-item { border-color: #a0a0a0; }

.nav-dropdown .nav-dropdown .menu-item {
  background-color: #b0b0b0;
  border-color: #909090;
}
 @media (min-width: 960px) {

.nav { background-color: #dedede; }

.nav,
 .nav-container,
 .nav-container.is-visible {
  position: static;
  top: auto;
  left: auto;
  z-index: auto;
  -webkit-transform: translateX(0);
  -ms-transform: translateX(0);
  transform: translateX(0);
}

.nav-container,
 .nav-container.is-visible {
  visibility: visible;
  height: auto;
  min-height: 0;
  overflow-y: visible;
}

.nav-toggle { display: none; }

.nav-menu > .menu-item,
 .nav-menu > .menu-item.is-active {
  display: inline-block;
  background-color: transparent;
  border: 0;
}

.nav-menu > .menu-item:last-child { border: 0; }

.nav-menu .menu-item {
  -webkit-transition: background-color 0.15s ease-in-out, color 0.15s ease-in-out;
  transition: background-color 0.15s ease-in-out, color 0.15s ease-in-out;
}

.has-dropdown:after { content: "" !important; }

.nav-menu > .has-dropdown:after {
  position: absolute;
  top: 50%;
  right: 1rem;
  width: 0;
  height: 0;
  margin-top: -2px;
  margin-left: -4px;
  content: "";
  border-width: 5px 5px 0 5px;
  border-style: solid;
  border-color: #444 transparent transparent transparent;
}

.has-dropdown > .menu-link { padding-right: 2rem; }

.nav-dropdown {
  display: block;
  opacity: 0;
  position: absolute;
  top: 100%;
  width: 200px;
  margin: 0;
  padding: 0.5rem 0;
  background-color: #dedede;
  box-shadow: 0 0 4px hsla(0, 0%, 0%, 0.15);
  visibility: hidden;
  -webkit-transition: visibility 0s linear 0.25s, opacity 0.25s linear;
  transition: visibility 0s linear 0.25s, opacity 0.25s linear;
}

.has-dropdown:hover > .nav-dropdown {
  visibility: visible;
  opacity: 1;
  -webkit-transition-delay: 0s;
  transition-delay: 0s;
}

.nav-dropdown .menu-item { border: 0; }

.nav-dropdown .menu-item:hover,
 .nav-dropdown .nav-dropdown .menu-item:hover { background-color: #d0d0d0; }

.nav-dropdown .nav-dropdown,
 .nav-dropdown .nav-dropdown .menu-item { background-color: #dedede; }

.nav-dropdown .nav-dropdown {
  z-index: 9998;
  top: 0;
  left: 100%;
}

.content { margin-top: 0; }
}

3. Include the latest version of jQuery JavaScript library at the end of the document.

<script src="//code.jquery.com/jquery-2.1.1.min.js"></script>

4. The jQuery script to active the responsive fixed navigation.

$(function() {
  var html = $('html, body'),
    navContainer = $('.nav-container'),
    navToggle = $('.nav-toggle'),
    navDropdownToggle = $('.has-dropdown');

  // Nav toggle
  navToggle.on('click', function(e) {
    var $this = $(this);
    e.preventDefault();
    $this.toggleClass('is-active');
    navContainer.toggleClass('is-visible');
    html.toggleClass('nav-open');
  });
  
  // Nav dropdown toggle
  navDropdownToggle.on('click', function() {
    var $this = $(this);
    $this.toggleClass('is-active').children('ul').toggleClass('is-visible');
  });
  
  // Prevent click events from firing on children of navDropdownToggle
  navDropdownToggle.on('click', '*', function(e) {
    e.stopPropagation();
  });
});

This awesome jQuery plugin is developed by cbracco. For more Advanced Usages, please check the demo page or visit the official website.