.banner {
  display: none;
  position: fixed;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 20px;
  border-radius: 4px;
  color: white;
  z-index: 1000;
  white-space: pre-line;
}
.banner.success {
  background-color: #4caf50; /* Green for success */
}
.banner.error {
  background-color: #f44336; /* Red for error */
}