.loader {
  width: 5.4em;
  height: 5.4em;
  border: 0.4em solid rgb(84, 84, 84);
  border-left-color: #a23ffc;
  border-radius: 45%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}