JSFiddle - React, Tailwind, and code Playground

HTML

<body>
  Additional input:<input type="text" id="alternate" value="December,19 2015"><br>
  Calendar input:<input type="text" id="from">
</body>

CSS

#from{font-size:3rem;color:blue;}
input{width:20px;}

JavaScript

$("#from").datepicker({

        defaultDate: "+1w",
        changeMonth: true,
        numberOfMonths: 1,
        altField: "#alternate",
        altFormat: "MM d, yy",
        onClose: function (selectedDate) {
            $("#to").datepicker("option", "minDate", selectedDate);
            $('input').css('width','auto');
        }
    });