JSFiddle - React, Tailwind, and code Playground

HTML

<body>
    <div class="external">
        <div class="internal">Example</div>
    </div>
    
<script src="https://raw.github.com/simplefocus/FlowType.JS/master/flowtype.js"></script>

</body>

CSS

.internal{width:100%;height:100%}
.external {width:400px;height:50px;background-color:yellow}

JavaScript

$('body').flowtype({
   minimum   : 50,
   maximum   : 500,
   minFont   : 5,
   maxFont   : 40,
   fontRatio : 30,
   lineRatio : 1.45
});