JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
   <div class="panel panel-default">
    <div class="panel-heading nodeHeading">Panel heading</div>
    <div class="panel-body" style="display:none;">Panel body</div>
   </div>
   <div class="panel panel-default">
    <div class="panel-heading nodeHeading">Panel heading</div>
    <div class="panel-body" style="display:none;">Panel body</div>
   </div>
   <div class="panel panel-default">
    <div class="panel-heading nodeHeading">Panel heading</div>
    <div class="panel-body" style="display:none;">Panel body</div>
   </div>
   <div class="panel panel-default">
    <div class="panel-heading nodeHeading">Panel heading</div>
    <div class="panel-body" style="display:none;">Panel body</div>
   </div>
      <div class="panel panel-default">
    <div class="panel-heading nodeHeading">Panel heading</div>
    <div class="panel-body" style="display:none;">Panel body</div>
   </div>
      <div class="panel panel-default">
    <div class="panel-heading nodeHeading">Panel heading</div>
    <div class="panel-body" style="display:none;">Panel body</div>
   </div>
      <div class="panel panel-default">
    <div class="panel-heading nodeHeading">Panel heading</div>
    <div class="panel-body" style="display:none;">Panel body</div>
   </div>
      <div class="panel panel-default">
    <div class="panel-heading nodeHeading">Panel heading</div>
    <div class="panel-body" style="display:none;">Panel body</div>
   </div>
      <div class="panel panel-default">
    <div class="panel-heading nodeHeading">Panel heading</div>
    <div class="panel-body" style="display:none;">Panel body</div>
   </div>
      <div class="panel panel-default">
    <div class="panel-heading nodeHeading">Panel heading</div>
    <div class="panel-body" style="display:none;">Panel body</div>
   </div>
      <div class="panel panel-default">
    <div class="panel-heading nodeHeading">Panel heading</div>
    <div class="panel-body" style="display:none;">Panel body</div>
   </div>
     ...

CSS

.panel-heading{
    border: solid #ccc;
    margin-bottom:2%;
    padding:2%;
}

JavaScript

$(".panel-heading").click( function() {
     $(this).next().slideToggle('slow');
    });