JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://davidstutz.github.io/bootstrap-multiselect/dist/js/bootstrap-multiselect.js"></script>
<select id="multySel" multiple="multiple" class="multySel form-control">
    <option value="cheese">Cheese</option>
    <option value="tomatoes">Tomatoes</option>
    <option value="mozarella">Mozzarella</option>
    <option value="mushrooms">Mushrooms</option>
    <option value="pepperoni">Pepperoni</option>
    <option value="onions">Onions</option>
</select>

<select id="multySel" class="form-control">
    <option value="cheese">Cheese</option>
    <option value="tomatoes">Tomatoes</option>
    <option value="mozarella">Mozzarella</option>
    <option value="mushrooms">Mushrooms</option>
    <option value="pepperoni">Pepperoni</option>
    <option value="onions">Onions</option>
</select>


<!--

LIBRARY
http://davidstutz.github.io/bootstrap-multiselect/dist/js/bootstrap-multiselect.js


OPTIONS
http://davidstutz.github.io/bootstrap-multiselect/

-->

JavaScript

$(document).ready(function() {
        $('#multySel').multiselect();
    });