#preloader {
  position: fixed;
  z-index: 99999;
  top: 0; left: 0; right: 0; bottom: 0;
  width: 100vw;
  height: 100vh;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s;
}

.loader-circle {
  width: 60px;
  height: 60px;
  border: 7px solid #c9001e;
  border-top: 7px solid #fff;
  border-radius: 50%;
  animation: preloader-spin 1s linear infinite;
}

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