JSFiddle - React, Tailwind, and code Playground

HTML

<div id="meet_growlab" class="content">BLAH BLAH BLAH
    <p><a href="#" class="close">Close</a></p>
</div>

<div id="buddy_tv" class="content">BLAH BLAH BLAH
    <p><a href="#" class="close">Close</a></p>
</div>

<ul>
    <li><a href="#" class="open" rel="#meet_growlab">
        Meet GrowLab - Canada’s Y-Combinator Arrives in Vancouver (June 24, 2011)
    </a></li>
    <li><a href="#" class="open" rel="#buddy_tv">
        Building the Web's Best Entertainment-Based Community Site: Andy Liu, CEO and Founder of BuddyTV (April 1, 2011)
    </a></li>
</ul>

CSS

.content, li {
    margin-bottom:15px;
}

JavaScript

$(document).ready(function(){

    $('.content').hide();
    
    $('.open').click(function(){
        var section = $(this).attr('rel');
        $(section).slideToggle();
    });
    
    $('.close').click(function(){
        $(this).parents('.content').slideUp();
    });

});