body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:#f4f7f9;color:#333;margin:0}.container{max-width:800px;margin:2rem auto;padding:2rem;background-color:#fff;border-radius:8px;box-shadow:0 4px 6px #0000001a;display:flex;justify-content:center}button{cursor:pointer;padding:10px 20px;border:none;border-radius:5px;background-color:#007bff;color:#fff;font-size:16px;transition:background-color .2s}button:hover{background-color:#0056b3}button:disabled{background-color:#ccc;cursor:not-allowed}input{width:95%;padding:10px;margin-bottom:1rem;border:1px solid #ccc;border-radius:5px}.form-group{margin-bottom:1rem}.navbar{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;background-color:#333;color:#fff}.navbar a{color:#fff;text-decoration:none;margin:0 1rem}.navbar button{background:transparent;border:1px solid white}