JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://qa2.n2clic.com/gim/wp-content/themes/gobert/js/pickadate.js/picker.js"></script>
<script src="http://qa2.n2clic.com/gim/wp-content/themes/gobert/js/pickadate.js/picker.date.js"></script>
<link rel="stylesheet" href="http://qa2.n2clic.com/gim/wp-content/themes/gobert/js/pickadate.js/default.css">
<link rel="stylesheet" href="http://qa2.n2clic.com/gim/wp-content/themes/gobert/js/pickadate.js/default.date.css">
<form action="#">
    <input type="text" name="date_arrival" class=".datepicker-date" placeholder="Click to select" required>
    <input type="submit" name="Submit" value="Submit">
</form>

JavaScript

jQuery(document).ready(function($) {
    $('.datepicker-date').pickadate()
});