JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"><<<< this goes in the header 
</script>
<script>
$(document).ready(function(){
  $(".business").click(function(){
    $(".hiddenlinks").slideToggle();
  });
});
</script>
</head>
<body>

    <div id="expand">

<a href="javascript://" class="business" >123</a>
    <div class="hiddenlinks">
         <a href="/"target="_blank" class="business" style="color:#f36523">ABC</a><br />
         <a href="/"target="_blank" class="business" style="color:#f36523">DEF</a><br />
         <a href="/"target="_blank" class="business" style="color:#f36523">HIJ</a>
    </div>
 </div>
</body>

CSS

.hiddenlinks { 
display:none;
}