JSFiddle - React, Tailwind, and code Playground

HTML

<html>
    <body id="abc">
        i'm a body
        <div style="border:2px green dotted;">
            hello world!
        </div>
    </body>
    <p>i'm out of body</p>
</html>

JavaScript

$(document).ready(function() {
    $("body#abc").wrap("<div>").css("border", "2px solid blue");
});