body{background:linear-gradient(135deg,#0069ff,#003c99);color:#fff;font-family:Poppins,sans-serif;text-align:center;height:100vh;display:flex;align-items:center;justify-content:center;flex-direction:column}h1{font-size:3.5rem;font-weight:700}a.btn{background-color:#fff;color:#0069ff;font-weight:600;padding:12px 30px;border-radius:50px;text-decoration:none;transition:all .3s ease}a.btn:hover{background-color:#f1f1f1;transform:translateY(-3px)}footer{position:absolute;bottom:20px;width:100%;text-align:center;color:#ffffffb3}