JSFiddle - React, Tailwind, and code Playground

by Nick Craver

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/dot-luv/jquery-ui.css">
<button class="subnav_company">Test</button>

<div class="aboutcontent developers">
<h1>Developers</h1>
<h4>The developers are the best</h4>
<p> we have some great developers</p>
</div>
<!--End aboutcontent developers-->


    <div class="aboutcontent company">
    <h1>Company</h1>
    <h4>offers a complete management tool . It's an easy to use and efficient way to manage and plan  stuff. It allows people to communicate and get along.</h4>
    </div>
    <!--End aboutcontent company-->

CSS

.company { display: none; }

JavaScript

$('.subnav_company').click(function(){
    $('.aboutcontent:visible').fadeOut('slow', function() {
    $('.company').fadeIn('slow');           
  });
});