.loader {
  border: 5px solid #f3f3f3;
  border-top: 5px solid #3498db; /* Blue color for the spinner */
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Optional: Add a fade-out animation */
.preloader-hidden {
  opacity: 0;
  transition: opacity 0.5s ease-out;
}