.site-header::before {
  content: "This is a mock-up of the ECA website created solely for demonstration purposes. It is not affiliated with or endorsed by ECA or the official website. All content, trademarks, and branding remain the property of ECA. To access the official website, visit ecawa.org.au.";
  display: block;
  background-color: orange;
  color: white;
  padding: 10px;
  font-size: 16px;
  text-align: center;
  border-radius: 5px;
}