JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://op1static.oktacdn.com/assets/js/sdk/okta-signin-widget/2.9.0/js/okta-sign-in.min.js"></script>
<link rel="stylesheet" href="https://op1static.oktacdn.com/assets/js/sdk/okta-signin-widget/2.6.0/css/okta-sign-in.min.css">
<div id="okta-login-container"></div>

JavaScript

var orgUrl = "https://<YOUR_ORG_HERE>.<okta/oktapreview>.com";

// config
var config = {
    baseUrl: orgUrl
};

// render widget
var oktaSignIn = new OktaSignIn(config);
oktaSignIn.renderEl({ el: '#okta-login-container' },
    function(res) {
        // success fn
        res.session.setCookieAndRedirect(orgUrl);
    },
    function(error) {
        // failure fn
        console.log(error.message, error);
    }
);