JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-2.2.0.min.js"></script>
<div id="about" class="fluid">
    <a href="#">About Contact</a>

    <div id="dropdown" class="fluid"><blockquote>
          We are a bla bla...
     </div>
</div>

CSS

#dropdown {display: none;
background:red;}

JavaScript

$("#about  a").click(function() {
    $("#dropdown").toggle();
    return false;
});