.loader {
  border: 7px solid #6f1b76; /* Light grey */
  /*border: 5px solid #f3f3f3; /* Light grey */
  border-top: 7px solid #3f0d4d; /* Red */
  /*border-top: 7px solid #3498db; /* Blue */
  border-radius: 80%;
  width: 30px;
  height: 30px;
  animation: spin 1.5s linear infinite;
}

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