JSFiddle - React, Tailwind, and code Playground

HTML

<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>
<input type="text" id="date"></input>

JavaScript

$('#date').datepicker({
	beforeShow: function (textbox, instance) {
        var txtBoxOffset = $(this).offset();
        var top = txtBoxOffset.top;
        var left = txtBoxOffset.left;
        var textBoxHeight = $(this).outerHeight();
        setTimeout(function () {
            instance.dpDiv.css({
               top: top-$("#ui-datepicker-div").outerHeight(),
               left: left
            });
        }, 0);
    }
});