<div id="menu-container">
   <div id="menu-wrapper">
      <div id="hamburger-menu"><span></span><span></span><span></span></div>
      <!-- hamburger-menu -->
   </div>
   <!-- menu-wrapper -->
   <ul class="menu-list accordion">
      <li id="nav1" class="toggle accordion-toggle"> 
         <span class="icon-plus"></span>
         <a class="menu-link" href="#">Menu1</a>
      </li>
      <!-- accordion-toggle -->
      <ul class="menu-submenu accordion-content">
         <li><a class="head" href="#">Submenu1</a></li>
         <li><a class="head" href="#">Submenu2</a></li>
         <li><a class="head" href="#">Submenu3</a></li>
      </ul>
      <!-- menu-submenu accordon-content-->
      <li id="nav2" class="toggle accordion-toggle"> 
         <span class="icon-plus"></span>
         <a class="menu-link" href="#">Menu2</a>
      </li>
      <!-- accordion-toggle -->
      <ul class="menu-submenu accordion-content">
         <li><a class="head" href="#">Submenu1</a></li>
         <li><a class="head" href="#">Submenu2</a></li>
      </ul>
      <!-- menu-submenu accordon-content-->
           <li id="nav3" class="toggle accordion-toggle"> 
         <span class="icon-plus"></span>
         <a class="menu-link" href="#">Menu3</a>
      </li>
      <!-- accordion-toggle -->
      <ul class="menu-submenu accordion-content">
         <li><a class="head" href="#">Submenu1</a></li>
         <li><a class="head" href="#">Submenu2</a></li>
         <li><a class="head" href="#">Submenu3</a></li>
         <li><a class="head" href="#">Submenu4</a></li>
      </ul>
      <!-- menu-submenu accordon-content-->
   </ul>
   <!-- menu-list accordion-->
</div>
<!-- menu-container -->
ul { list-style: none; }
a { text-decoration: none; color: black;}
body {
   font-family: 'Dosis', sans-serif;
  background: #FF5722;
}
#menu-wrapper {
    overflow: hidden;
    max-width: 100%;
    cursor: pointer;
}


#menu-wrapper #hamburger-menu {
    position: relative;
    width: 25px;
    height: 20px;
    margin: 15px;
}

#menu-wrapper #hamburger-menu span {
    opacity: 1;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";
    left: 0;
    display: block;
    width: 100%;
    height: 2px;
    border-radius: 10px;
    color: black;
    background-color: white;
    position: absolute;
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
    -webkit-transition: .4s ease-in-out;
    transition: .4s ease-in-out;
}

#menu-wrapper #hamburger-menu span:nth-child(1) {
    top: 0;
}
#menu-wrapper #hamburger-menu span:nth-child(2) {
    top: 9px;
}
#menu-wrapper #hamburger-menu span:nth-child(3) {
    top: 18px;
}
#menu-wrapper #hamburger-menu.open span:nth-child(1) {
    top: 9px;
    -webkit-transform: rotate(135deg);
    transform: rotate(135deg);
}
#menu-wrapper #hamburger-menu.open span:nth-child(2) {
    opacity: 0;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
    left: -60px;
}
#menu-wrapper #hamburger-menu.open span:nth-child(3) {
    top: 9px;
    -webkit-transform: rotate(-135deg);
    transform: rotate(-135deg);
}

#menu-container .menu-list .menu-submenu {
    padding-top: 20px;
    padding-bottom: 20px;
}
#menu-container .menu-list {
    padding-left: 0;
    display: block;
    position: absolute;
    width: 100%;
    max-width: 450px;
    background: white;
    box-shadow: rgba(100,100,100,0.2) 6px 2px 10px;
    z-index: 999;
    overflow-y: auto;
    overflow-x: hidden;
    left: -100%;
}

#menu-container .menu-list li.accordion-toggle, #menu-container .menu-list .menu-login {
    font-size: 16px;
    padding: 20px;
    text-transform: uppercase;
    border-top: 1px solid #dbdcd2;
}
#menu-container .menu-list li:first-of-type {
    border-top: 0;
}

.accordion-toggle, .accordion-content {
    cursor: pointer;
    font-size: 16px;
    position: relative;
    letter-spacing: 1px;
}

  .accordion-content {
    display: none;
}

.accordion-toggle a:before, .accordion-toggle a:after {
    content: '';
    display: block;
    position: absolute;
    top: 50%;
    right: 30px;
    width: 15px;
    height: 2px;
    margin-top: -1px;
    background-color: #5a5858;
    -webkit-transform-origin: 50% 50%;
    -ms-transform-origin: 50% 50%;
    transform-origin: 50% 50%;
    -webkit-transition: all 0.3s;
    transition: all 0.3s ease-out;
}

.accordion-toggle a:before {
    -webkit-transform: rotate(-90deg);
    -ms-transform: rotate(-90deg);
    transform: rotate(-90deg);
    opacity: 1;
    z-index: 2;
}

.accordion-toggle.active-tab {
  background: yellowgreen;
  transition: all 0.3s ease;
}
.accordion-toggle a.active:before {
    -webkit-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    transform: rotate(0deg);
    background: #fff !important;
}

.accordion-toggle a.active:after {
    -webkit-transform: rotate(180deg);
    -ms-transform: rotate(180deg);
    transform: rotate(180deg);
    background: #fff !important;
    opacity: 0;
}
$(function() {
  function slideMenu() {
    var activeState = $("#menu-container .menu-list").hasClass("active");
    $("#menu-container .menu-list").animate({left: activeState ? "0%" : "-100%"}, 400);
  }
  $("#menu-wrapper").click(function(event) {
    event.stopPropagation();
    $("#hamburger-menu").toggleClass("open");
    $("#menu-container .menu-list").toggleClass("active");
    slideMenu();

    $("body").toggleClass("overflow-hidden");
  });

  $(".menu-list").find(".accordion-toggle").click(function() {
    $(this).next().toggleClass("open").slideToggle("fast");
    $(this).toggleClass("active-tab").find(".menu-link").toggleClass("active");

    $(".menu-list .accordion-content").not($(this).next()).slideUp("fast").removeClass("open");
    $(".menu-list .accordion-toggle").not(jQuery(this)).removeClass("active-tab").find(".menu-link").removeClass("active");
  });
}); // jQuery load

External CSS

  1. https://fonts.googleapis.com/css?family=Dosis

External JavaScript

  1. https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js