JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap-theme.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>

 <nav>
    <ul class="nav navbar-nav main-navigation">
        <li><a href="">HOME</a></li>
        <li><a href="">PORTFOLIO</a></li>
        <li><a href="">BLOG</a></li>
        <li><a href="">PAGES</a></li>
        <li><a href="">FEATURES</a></li>
        <li role="presentation" class="dropdown">
            <a class="dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-expanded="false">MEGA MENU</a>
            <ul class="dropdown-menu" role="menu">
                <li><a href="#">Action</a></li>
                <li><a href="#">Another action</a></li>
                <li><a href="#">Something else here</a></li>
                <li><a href="#">Separated link</a></li>
            </ul>
        </li>
        <li><a href="">CONTACT</a></li>
    </ul>
 </nav>

JavaScript

$(function(){
    $("li.dropdown").hover(function(){
        $(this).toggleClass("open");
    });
    });