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Trendy Morphing Dropdown Menu With jQuery And CSS3

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License: MIT
   
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Chrome, IE10+, FireFox, Opera, Safari#Drop Down Menu#morphing menu
Trendy Morphing Dropdown Menu With jQuery And CSS3

A trendy site navigation concept that morphs the hamburger button into a dropdown menu using jQuery and CSS3 animations.

How to use it:

1. Create the dropdown menu from a nav list.

<div class="nav">
  <div class="nav__content">
    <ul class="nav__list">
      <li class="nav__list-item active-nav"><a href="#" class="hover-target">Home</a></li>
      <li class="nav__list-item"><a href="#" class="hover-target">Portfolio</a></li>
      <li class="nav__list-item"><a href="#" class="hover-target">Studio</a></li>
      <li class="nav__list-item"><a href="#" class="hover-target">News</a></li>
      <li class="nav__list-item"><a href="#" class="hover-target">Contact</a></li>
    </ul>
  </div>
</div>

2. Create the hamburger button.

<div class="nav-but-wrap">
  <div class="menu-icon hover-target">
    <span class="menu-icon__line menu-icon__line-left"></span>
    <span class="menu-icon__line"></span>
    <span class="menu-icon__line menu-icon__line-right"></span>
  </div>          
</div>

3. The necessary CSS/CSS3 styles for the hamburger button & dropdown menu.

.nav-but-wrap{ 
  position: relative;
  display: inline-block;
  float: left;
  padding-left: 15px;
  padding-top: 15px;
  margin-top: 26px;
  transition : all 0.3s ease-out;
}

.menu-icon {
  height: 30px;
  width: 30px;
  position: relative;
  z-index: 2;
  cursor: pointer;
  display: block;
}

.menu-icon__line {
  height: 2px;
  width: 30px;
  display: block;
  background-color: #fff;
  margin-bottom: 7px;
  cursor: pointer;
  -webkit-transition: background-color .5s ease, -webkit-transform .2s ease;
  transition: background-color .5s ease, -webkit-transform .2s ease;
  transition: transform .2s ease, background-color .5s ease;
  transition: transform .2s ease, background-color .5s ease, -webkit-transform .2s ease;
}

.menu-icon__line-left {
  width: 16.5px;
  -webkit-transition: all 200ms linear;
  transition: all 200ms linear;
}

.menu-icon__line-right {
  width: 16.5px;
  float: right;
  -webkit-transition: all 200ms linear;
  -moz-transition: all 200ms linear;
  -o-transition: all 200ms linear;
  -ms-transition: all 200ms linear;
  transition: all 200ms linear;
}

.menu-icon:hover .menu-icon__line-left,
.menu-icon:hover .menu-icon__line-right {
  width: 30px;
}

.nav {
  position: fixed;
  z-index: 98;
}

.nav:before, .nav:after {
  content: "";
  position: fixed;
  top: 20px;
  left: 50px;
  width: 0;
  height: 0;
  background-color: rgba(20, 21, 26,0.6);
  border-bottom-right-radius: 200%;
  z-index: -1;
  transition: border-radius linear 0.8s, width cubic-bezier(0.77, 0, 0.175, 1) 0.6s, height cubic-bezier(0.77, 0, 0.175, 1) 0.6s;
}

.nav:after {
  background-color: rgba(9,9,12,1);
  background-image: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/1462889/pat.svg');
  background-position: bottom center;
  background-repeat: no-repeat;
  background-size: 300%;
  -webkit-transition-delay: 0s;
          transition-delay: 0s;
  box-shadow: 6px 7px 28px 0 rgba(16, 16, 16, 0.3);
}

.nav:before {
  -webkit-transition-delay: .2s;
          transition-delay: .2s;
}

.nav__content {
  position: fixed;
  visibility: hidden;
  top: 90px;
  left: 50px;
  width: 280px;
  text-align: left;
}

.nav__list {
  position: relative;
  padding: 0;
  margin: 0;
  z-index: 2;
}

.nav__list-item {
  position: relative;
  display: block;
  -webkit-transition-delay: 0.8s;
          transition-delay: 0.8s;
  opacity: 0;
  text-align: left;
  color: #fff;
  overflow: hidden; 
  font-family: 'Poppins', sans-serif;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 2px;
  -webkit-transform: translate(30px, 0%);
          transform: translate(30px, 0%);
  -webkit-transition: opacity .2s ease, -webkit-transform .3s ease;
  transition: opacity .2s ease, -webkit-transform .2s ease;
  transition: opacity .2s ease, transform .2s ease;
  transition: opacity .2s ease, transform .2s ease, -webkit-transform .2s ease;
  margin-top: 7px;
  margin-bottom: 7px;
}

.nav__list-item a{ 
  position: relative;
  text-decoration: none;
  color: rgba(255,255,255,0.6);
  overflow: hidden; 
  cursor: pointer;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  z-index: 2;
  padding-left: 40px;
  padding-top:5px;
  padding-bottom: 5px;
  display: inline-block;
    -webkit-transition: all 200ms linear;
    transition: all 200ms linear; 
}

.nav__list-item a:after{ 
  position: absolute;
  content: '';
  top: 50%;
  left: 0;
  width: 5px;
  height: 0;
  opacity: 0;
  background-color: #8167a9;
  z-index: 1;
    -webkit-transition: all 200ms linear;
    transition: all 200ms linear; 
}

.nav__list-item a:hover:after{ 
  height: 100%;
  opacity: 1;
  top: 0;
}

.nav__list-item a:hover{
  color: rgba(255,255,255,1);
}

.nav__list-item.active-nav a{
  color: rgba(255,255,255,1);
}

.nav__list-item.active-nav a:after{ 
  height: 100%;
  opacity: 1;
  top: 0;
}

body.nav-active .nav__content {
  visibility: visible;
}

body.nav-active .menu-icon__line {
  background-color: #fff;
  -webkit-transform: translate(0px, 0px) rotate(-45deg);
          transform: translate(0px, 0px) rotate(-45deg);
}

body.nav-active .menu-icon__line-left {
  width: 15px;
  -webkit-transform: translate(2px, 4px) rotate(45deg);
          transform: translate(2px, 4px) rotate(45deg);
}

body.nav-active .menu-icon__line-right {
  width: 15px;
  float: right;
  -webkit-transform: translate(-3px, -3.5px) rotate(45deg);
          transform: translate(-3px, -3.5px) rotate(45deg);
}

body.nav-active .menu-icon:hover .menu-icon__line-left,
body.nav-active .menu-icon:hover .menu-icon__line-right {
  width: 15px;
}

body.nav-active .nav {
  visibility: visible;
}

body.nav-active .nav:before, body.nav-active .nav:after {
  width: 250px;
  height: 350px;
  border-radius: 15px;
}

body.nav-active .nav:after {
  -webkit-transition-delay: .1s;
          transition-delay: .1s;
}

body.nav-active .nav:before {
  -webkit-transition-delay: 0s;
          transition-delay: 0s;
}

body.nav-active .nav__list-item {
  opacity: 1;
  -webkit-transform: translateX(0%);
          transform: translateX(0%);
  -webkit-transition: opacity .3s ease, color .3s ease, -webkit-transform .3s ease;
  transition: opacity .3s ease, color .3s ease, -webkit-transform .3s ease;
  transition: opacity .3s ease, transform .3s ease, color .3s ease;
  transition: opacity .3s ease, transform .3s ease, color .3s ease, -webkit-transform .3s ease;
}

body.nav-active .nav__list-item:nth-child(0) {
  -webkit-transition-delay: 0.7s;
          transition-delay: 0.7s;
}

body.nav-active .nav__list-item:nth-child(1) {
  -webkit-transition-delay: 0.8s;
          transition-delay: 0.8s;
}

body.nav-active .nav__list-item:nth-child(2) {
  -webkit-transition-delay: 0.9s;
          transition-delay: 0.9s;
}

body.nav-active .nav__list-item:nth-child(3) {
  -webkit-transition-delay: 1s;
          transition-delay: 1s;
}

body.nav-active .nav__list-item:nth-child(4) {
  -webkit-transition-delay: 1.1s;
          transition-delay: 1.1s;
}

body.nav-active .nav__list-item:nth-child(5) {
  -webkit-transition-delay: 1.2s;
          transition-delay: 1.2s;
}

body.nav-active .nav__list-item:nth-child(6) {
  -webkit-transition-delay: 1.3s;
          transition-delay: 1.3s;
}

body.nav-active .nav__list-item:nth-child(7) {
  -webkit-transition-delay: 1.4s;
          transition-delay: 1.4s;
}

body.nav-active .nav__list-item:nth-child(8) {
  -webkit-transition-delay: 1.5s;
          transition-delay: 1.5s;
}

body.nav-active .nav__list-item:nth-child(9) {
  -webkit-transition-delay: 1.6s;
          transition-delay: 1.6s;
}

body.nav-active .nav__list-item:nth-child(10) {
  -webkit-transition-delay: 1.7s;
          transition-delay: 1.7s;
}

4. Load the latest version of jQuery JavaScript library at the end of the document.

<script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha384-tsQFqpEReu7ZLhBV2VZlAu7zcOV+rXbYlF2cqB8txI/8aZajjp4Bqd+V6D5IgvKT" crossorigin="anonymous"></script>

5. The necessary JavaScript (jQuery script) to activate the morphing dropdown menu.

var app = function () {
    var body = undefined;
    var menu = undefined;
    var menuItems = undefined;
    var init = function init() {
      body = document.querySelector('body');
      menu = document.querySelector('.menu-icon');
      menuItems = document.querySelectorAll('.nav__list-item');
      applyListeners();
    };
    var applyListeners = function applyListeners() {
      menu.addEventListener('click', function () {
        return toggleClass(body, 'nav-active');
      });
    };
    var toggleClass = function toggleClass(element, stringClass) {
      if (element.classList.contains(stringClass)) element.classList.remove(stringClass);else element.classList.add(stringClass);
    };
    init();
}();

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