<html><head><title>Check</title></head><body style='font-family:sans-serif; display:flex; justify-content:center; align-items:center; height:100vh; margin:0;'><div style='text-align:center; border:1px solid #ccc; padding:20px; border-radius:10px;'><h1 style='color:#2ecc71;'>Check</h1><p>System is Operational.</p></div></body></html>