.loader {
  border: 5px solid #e4e4e4;
  -webkit-animation: spin 1s linear infinite;
  animation: spin 1s linear infinite;
  border-top: 5px solid #bfd1e2;
  border-radius: 50%;
  width: 50px;
  height: 50px;
}

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