#preloader {
  position: fixed;
  left: 0; top: 0;
  width: 100vw; height: 100vh;
  background: #fff;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}
.loader {
  width: 60px; height: 60px;
  border: 8px solid #D50B19;
  border-top: 8px solid #0161AF;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}