JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://raw.github.com/twitter/bootstrap/master/docs/assets/css/bootstrap.css">
<script src="https://github.com/twitter/bootstrap/blob/master/docs/assets/img/glyphicons-halflings-white.png"></script>
<div class='expandable'>
    <h2 class="collapsed">Top Five Love<i class="icon-plus-sign"></i></h2>
      <ul id="myList">
          <li>First item</li>
          <li>Second item</li>
          <li>Third item</li>
          <li>Fourth item</li>
          <li>Fifth item</li>
    </ul>
</div>

CSS

.icon-plus-sign {
  background-position: 0 -96px;
  background-image: url("../images/glyphicons-halflings-white.png");
  float: right;
  margin: 5px;
}
.icon-minus-sign {
  background-position: -24px -96px;
  background-image: url("../images/glyphicons-halflings-white.png");
  float: right;
  margin: 5px;
}
.expandable{
/*height: 25px;*/
overflow: hidden;
width: 200px;
background-color: #2C2C2C;
border-radius: 5px;
color: #fff;
}

#myList {
    display: none;
}

.collapsed{  
height: 25px;
font-size: 1.1em;
box-sizing: border-box;
padding-left: 25px;
cursor: pointer;
background-color: #333;
color: #fff;
padding-left: 10px;
}

JavaScript

$('.expandable').find('h2').on('click', function(){
      $("#myList").slideToggle('speed');
})