JSFiddle - React, Tailwind, and code Playground

by grant

HTML

<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.7.1/js/bootstrap-datepicker.min.js"></script>
<main class="container">
    <div class="row" style="padding-top: 100px">
        <div class="col">
            <input data-date-format="dd/mm/yyyy" id="datepicker">
        </div>
    </div>
</main>

CSS

.datepicker {
            font-size: 0.875em;
        }
        /* solution 2: the original datepicker use 20px so replace with the following:*/
        
        .datepicker td, .datepicker th {
            width: 1.5em;
            height: 1.5em;
        }

JavaScript

$('#datepicker').datepicker({
        weekStart: 1,
        daysOfWeekHighlighted: "6,0",
        autoclose: true,
        todayHighlight: true,
    });
    $('#datepicker').datepicker("setDate", new Date());