.redColor {
  color: red;
}
.error {
  border: 2px solid red;
}

.loader {
  border: 16px solid #f3f3f3;
  /* Light grey */
  border-top: 16px solid #3498db;
  /* Blue */
  border-radius: 50%;
  width: 30px;
  height: 30px;
  animation: spin 2s linear infinite;
}

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

  100% {
    transform: rotate(360deg);
  }
}