Select2 gives you a customizable select box with support for searching, tagging, remote data sets, infinite scrolling, and many other highly used options.
Official DocumentationIn order to use this plugin on your page you will need to include the following styles in the Page CSS area from the page’s head section.
In order to use this plugin on your page you will need to include the following script in the “Page JS” area from the page’s footer.
<script src="../assets/select2/select2.full.min.js"></script>
<script src="../assets/select2/select2.min.js"></script>