.loader {
  border: 6px solid #A9A9A9;
  border-radius: 50%;
  border-top: 6px solid #404040;
  border-bottom: 6px solid #404040;
  width: 10px;
  height: 10px;
  margin:0 auto;
  -webkit-animation: spin 2s linear infinite; /* Safari */
  animation: spin 2s linear infinite;
}

/* Safari */
@-webkit-keyframes spin {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); }
}

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