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HTML

              
                
              
            
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CSS

              
                
              
            
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JS

              
                (function() {

  function readCookie(name) {
      var nameEQ = name + "=";
      var ca = document.cookie.split(';');
      for(var i=0;i < ca.length;i++) {
         var c = ca[i];
         while (c.charAt(0)==' ') c = c.substring(1,c.length);
         if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
      }
      return null;
   }

   var value_to_check_for = 'cookie value'; // Fill here what value should the cookie contain. 
   var coupon = readCookie('cookie_name');  // Fill the Cookie value
   if(coupon==null) {
       return false;} 
   else return ((window.location.href=="https://www.convert.com/") && (coupon.includes(value_to_check_for))); 
  // Feel above the URL of where the experience should run
})()
              
            
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999px

Console