JSFiddle - React, Tailwind, and code Playground
by thorst
HTML
<script src="//code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<link rel="stylesheet" href="//stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="//stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap-select.min.css">
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap-select.min.js"></script>
<div class="col-sm-3">
<div class="form-group">
<select id="slStrategy" class="selectpicker form-control" multiple="" tabindex="-98">
<optgroup label="Neutral">
<option value="23">Butterfly</option>
<option value="25">Calendar</option>
<option value="22">Iron Condor</option>
<option value="20">Straddle</option>
<option value="19">Strangle</option>
</optgroup>
<optgroup label="Directional">
<option value="21">Call Single</option>
<option value="26">Call Vertical</option>
<option value="24">Jade Lizard</option>
<option value="27">Put Single</option>
<option value="18">Put Vertical</option>
</optgroup>
</select>
</div>
</div>
JavaScript
$(function(){
});