JSFiddle - React, Tailwind, and code Playground

HTML

<nav class="pushy pushy-left">
            <ul>
                <li class="pushy-submenu">
                    <a href="#">MENU</a>
                    <ul>
                        <li class="pushy-link"><a href="#">Home</a></li>
                        <li class="pushy-link"><a href="#">Quem somos</a></li>
                    

                    </ul>
                </li>
                
                
              
            </ul>
        </nav>
         <!-- VisĂŁo escura enquanto o Menu accordeon estiver aberto -->
        <div class="site-overlay"></div>

CSS

/*! Pushy - v1.0.0 - 2016-3-1
* Pushy is a responsive off-canvas navigation menu using CSS transforms & transitions.
* https://github.com/christophery/pushy/
* by Christopher Yee */
/* Menu Appearance */
ul{
    list-style: none;
}

.pushy {
  position: fixed;
  width: 200px;
  height: 100%;
  top: 0;
  z-index: 9999;
  background: #191918;
  overflow: auto;
  visibility: hidden;
  -webkit-overflow-scrolling: touch;
  /* enables momentum scrolling in iOS overflow elements */
}
.pushy a {
  display: block;
  color: #b3b3b1;
  padding: 15px;
  text-decoration: none;
  outline: 0;
}
.pushy a:hover {
  color: #FFF;
}
.pushy ul:first-child {
  margin-top: 10px;
}
.pushy.pushy-left {
  left: 0;
}
.pushy.pushy-right {
  right: 0;
}

/* Menu Movement */
.pushy-left {
  -webkit-transform: translate3d(-200px, 0, 0);
  -ms-transform: translate3d(-200px, 0, 0);
  transform: translate3d(-200px, 0, 0);
}

.pushy-open-left #container,
.pushy-open-left .push {
  -webkit-transform: translate3d(200px, 0, 0);
  -ms-transform: translate3d(200px, 0, 0);
  transform: translate3d(200px, 0, 0);
}

.pushy-right {
  -webkit-transform: translate3d(200px, 0, 0);
  -ms-transform: translate3d(200px, 0, 0);
  transform: translate3d(200px, 0, 0);
}

.pushy-open-right #container,
.pushy-open-right .push {
  -webkit-transform: translate3d(-200px, 0, 0);
  -ms-transform: translate3d(-200px, 0, 0);
  transform: translate3d(-200px, 0, 0);
}

.pushy-open-left .pushy,
.pushy-open-right .pushy {
  -webkit-transform: translate3d(0, 0, 0);
  -ms-transform: translate3d(0, 0, 0);
  transform: translate3d(0, 0, 0);
}

/* Menu Transitions */
#container,
.pushy,
.push {
  transition: transform 0.2s cubic-bezier(0.16, 0.68, 0.43, 0.99);
}

/* Site Overlay */
.site-overlay {
  display: none;
}

.pushy-open-left .site-overlay,
.pushy-open-right .site-overlay {
  display: block;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 9998;
  background-color: rgba(0, 0, 0, 0.5);
 ...

JavaScript

/*! Pushy - v1.0.0 - 2016-3-1
* Pushy is a responsive off-canvas navigation menu using CSS transforms & transitions.
* https://github.com/christophery/pushy/
* by Christopher Yee */

(function ($) {
	var pushy = $('.pushy'), //menu css class
		body = $('body'),
		container = $('#container'), //container css class
		push = $('.push'), //css class to add pushy capability
		pushyLeft = 'pushy-left', //css class for left menu position
		pushyOpenLeft = 'pushy-open-left', //css class when menu is open (left position)
		pushyOpenRight = 'pushy-open-right', //css class when menu is open (right position)
		siteOverlay = $('.site-overlay'), //site overlay
		menuBtn = $('.menu-btn, .pushy-link'), //css classes to toggle the menu
		menuSpeed = 200, //jQuery fallback menu speed
		menuWidth = pushy.width() + 'px', //jQuery fallback menu width
		submenuClass = '.pushy-submenu',
		submenuOpenClass = 'pushy-submenu-open',
		submenuClosedClass = 'pushy-submenu-closed',
		submenu = $(submenuClass);

	function togglePushy(){
		//add class to body based on menu position
		if( pushy.hasClass(pushyLeft) ){
			body.toggleClass(pushyOpenLeft);
		}else{
			body.toggleClass(pushyOpenRight);
		}
	}

	function openPushyFallback(){		

		//animate menu position based on CSS class
		if( pushy.hasClass(pushyLeft) ){
			body.addClass(pushyOpenLeft);
			pushy.animate({left: "0px"}, menuSpeed);
			container.animate({left: menuWidth}, menuSpeed);
			//css class to add pushy capability
			push.animate({left: menuWidth}, menuSpeed);
		}else{
			body.addClass(pushyOpenRight);
			pushy.animate({right: '0px'}, menuSpeed);
			container.animate({right: menuWidth}, menuSpeed);
			push.animate({right: menuWidth}, menuSpeed);
		}

	}

	function closePushyFallback(){

		//animate menu position based on CSS class
		if( pushy.hasClass(pushyLeft) ){
			body.removeClass(pushyOpenLeft);
			pushy.animate({left: "-" + menuWidth}, menuSpeed);
			container.animate({left: "0px"}, menuSpeed);
			//css class to add pushy...