#page_loader { background: rgba(0, 0, 0, 0.35) none repeat scroll 0 0; height: 100%; left: 0; position: fixed; top: 0; width: 100%; z-index: 99999; }
#page_loader .loading { margin: 0 auto; position: relative;border: 16px solid #f3f3f3;border-radius: 50%;border-top: 16px solid #1a4095;border-bottom: 16px solid #1a4095;width: 80px;height: 80px;-webkit-animation: spin 2s linear infinite;animation: spin 2s linear infinite;top: calc( 50% - 40px);}
@-webkit-keyframes spin {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); }
}
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}