<head>
    <!-- Include jQuery library -->
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>

    <!-- Include jQuery UI CSS -->
    <link rel="stylesheet" href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
    
    <!-- Include jQuery UI Datepicker script -->
    <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
</head>

<script>
    $(function() {
        $("#datepicker").datepicker();
    });
</script>
/* 
* put your own css code here 
* don't update templates css file.
* because it's regularly get updated
*/



