@-webkit-keyframes spinner {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); }
}

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

.spinner {
  border-top-color: #3498db;
  -webkit-animation: spinner 1.5s linear infinite;
  animation: spinner 1.5s linear infinite;
}