.loader {
  border: 5px solid #f3f3f3;
  border-radius: 50%;
  border-right: 5px solid #e3ad29;
  border-bottom: 5px solid #000000;
  width: 40px;
  height: 40px;
  -webkit-animation: spin 2s linear infinite;
  animation: spin 1s linear infinite;
  margin-top: 350px;
  margin-left: 50%;
}

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

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