JSFiddle - React, Tailwind, and code Playground

HTML

<div class="text">Benny is looking for a Buharian wife</div>
<div class="text">Benny!</div>

JavaScript

$('.text').each(function(){
     var el= $(this);
       var textLength = el.html().length;
        if (textLength > 20) {
            el.css('font-size', '0.8em');
        }
});