Material Design Responsive Off-canvas Menu with jQuery and CSS3

A Google Material Design inspired responsive navigation concept that automatically transforms a normal horizontal dropdown menu into a mobile-friendly off-canvas menu with a toggle bar when the screen size is smaller than a specified breakpoint defined in the CSS3 media queries.

How to use it:

1. Create a two-level dropdown navigation menu as follow.

<nav>
  <div class="navigation">
    <ul>
      <li><a href="">Home</a></li>
      <li><a href="">About</a></li>
      <li><a href="">Contact</a></li>
      <li><a href="#" tabindex="1">Services<span class="arrow-down"></span></a>
        <ul class="dropdown">
          <li><a href="">Services - 1</a></li>
          <li><a href="">Services - 2</a></li>
          <li><a href="">Services - 3</a></li>
          <li><a href="">Services - 4</a></li>
          <li><a href="">Services - 5</a></li>
        </ul>
      </li>
      <li><a href="#" tabindex="1">Works<span class="arrow-down"></span></a>
        <ul class="dropdown">
          <li><a href="">Works - 1</a></li>
          <li><a href="">Works - 2</a></li>
          <li><a href="">Works - 3</a></li>
          <li><a href="">Works - 4</a></li>
          <li><a href="">Works - 5</a></li>
        </ul>
      </li>
    </ul>
  </div>
  <div class="nav_bg">
    <div class="nav_bar"> <span></span> <span></span> <span></span> </div>
  </div>
</nav>

2. Style the navigation menu on wide screens.

.navigation {
  display: block;
  margin: 20px 0;
  background: #009788;
  box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.26);
  border-radius: 3px;
}

.navigation ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  display: block;
}

.navigation li {
  list-style-type: none;
  margin: 0;
  padding: 0;
  display: inline-block;
  position: relative;
  font-size: 17px;
  color: #def1f0;
}

.navigation li a {
  padding: 10px 15px;
  font-size: 17px;
  color: #def1f0;
  display: inline-block;
  outline: 0;
  font-weight: 400;
}

.navigation li:hover ul.dropdown { display: block; }

.navigation li ul.dropdown {
  position: absolute;
  display: none;
  width: 200px;
  background: #00695b;
  box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.26);
  padding-top: 0;
}

.navigation li ul.dropdown li {
  display: block;
  list-style-type: none;
}

.navigation li ul.dropdown li a {
  padding: 10px;
  font-size: 15px;
  color: #fff;
  display: block;
  border-bottom: 1px solid #005c4d;
  font-weight: 400;
}

.navigation li ul.dropdown li:last-child a { border-bottom: none; }

.navigation li:hover a {
  background: #00695b;
  color: #fff !important;
}

.navigation li:first-child:hover a { border-radius: 3px 0 0 3px; }

.navigation li ul.dropdown li:hover a { background: #56b5ae; }

.navigation li ul.dropdown li:first-child:hover a { border-radius: 0; }

.navigation li:hover .arrow-down { border-top: 5px solid #fff; }

.arrow-down {
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid #def1f0;
  position: relative;
  top: 15px;
  right: -5px;
  content: '';
}

3. Style the navigation menu on small screens (screen width < 767px).

@media only screen and (max-width:767px) {

.navigation {
  background: #fff;
  width: 200px;
  height: 100%;
  display: block;
  position: fixed;
  left: -200px;
  top: 0px;
  transition: left 0.3s linear;
  margin: 0;
  border: 0;
  border-radius: 0;
  overflow-y: auto;
  overflow-x: hidden;
  height: 100%;
}

.navigation.visible {
  left: 0px;
  transition: left 0.3s linear;
}

.nav_bg {
  display: inline-block;
  vertical-align: middle;
  width: 100%;
  height: 50px;
  margin: 0;
  position: absolute;
  top: 0px;
  left: 0px;
  background: #009788;
  padding: 12px 0 0 10px;
  box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.26);
}

.nav_bar {
  display: inline-block;
  vertical-align: middle;
  height: 50px;
  cursor: pointer;
  margin: 0;
}

.nav_bar span {
  height: 2px;
  background: #fff;
  margin: 5px;
  display: block;
  width: 20px;
}

.nav_bar span:nth-child(2) { width: 20px; }

.nav_bar span:nth-child(3) { width: 20px; }

.navigation ul { padding-top: 50px; }

.navigation li { display: block; }

.navigation li a {
  display: block;
  color: #505050;
  font-weight: 500;
}

.navigation li:first-child:hover a { border-radius: 0; }

.navigation li ul.dropdown { position: relative; }

.navigation li ul.dropdown li a {
  background: #00695b !important;
  border-bottom: none;
  color: #fff !important;
}

.navigation li:hover a {
  background: #009788;
  color: #fff !important;
}

.navigation li ul.dropdown li:hover a {
  background: #56b5ae !important;
  color: #fff !important;
}

.navigation li ul.dropdown li a { padding: 10px 10px 10px 30px; }

.navigation li:hover .arrow-down { border-top: 5px solid #fff; }

.arrow-down {
  border-top: 5px solid #505050;
  position: absolute;
  top: 20px;
  right: 10px;
}

.opacity {
  background: rgba(0,0,0,0.7);
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}
}

4. Make sure you have latest version of jQuery library loaded in the web page.

<script src="//code.jquery.com/jquery-2.1.4.min.js"></script>

5. The jQuery script to toggle the off-canvas menu on small screens.

$('.nav_bar').click(function(){
  $('.navigation').toggleClass('visible');
  $('body').toggleClass('opacity');
});

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This awesome jQuery plugin is developed by dipakgupta01. For more Advanced Usages, please check the demo page or visit the official website.