JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.min.js"></script>
<link rel="stylesheet" href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<div id="div-id" class="ui-widget-content">
  Resizable
</div>

CSS

#div-id { width: 200px; height: 150px; padding: 0.5em; }
#div-id h3 { text-align: center; margin: 0; font-size:14px; }

JavaScript

$( function() {
    var basefont = 14;
    var scale = 1;
    var width = $( "#div-id" ).width();
    $( "#div-id" ).resizable();
    $( "#div-id" ).on('resize', function() {
     scale = $(this).width() / width;
      $( "#div-id" ).css('font-size', scale*basefont);
    });
});