JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.8/css/select2.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.8/js/select2.min.js"></script>
<p>Before</p>
<select class="js-select2-tags  js-select2-tags--model"></select>
<p>After</p>

CSS

.select2-container {
  width: 200px !important;
}

JavaScript

// Input field that allows free data entry with model key style validation
    $(".js-select2-tags.js-select2-tags--model").each(function() {
        $(this).select2({
            tags: true,
            multiple: true
        });
    });