Here is an example of using the Flex Table in a plain html page:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<link href="https://developer.temenos.com/uux/base.css" rel="stylesheet" />
<script src="https://developer.temenos.com/uux/unified-ux-web.min.js"></script>
</head>
<body>
<uwc-stepper
orientation="horizontal"
steps='[{"label":"Wake up, yawn, groan"},{"label":"Get dressed"},{"label":"Make coffee / fag"},{"label":"Drink coffee / smoke fag"}]'
activeStepIndex="2"
></uwc-stepper>
</body>
</html>