.loader {
  border: 8px solid #f3f3f3; /* Light grey */
  border-top: 8px solid #f4d805; /* Blue */
  border-right: 8px solid #0374c5;
  border-bottom: 8px solid #d99205;
  
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 2s linear infinite;
}

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