.loader {
  position: absolute;
    top: 50%;
    left: 50%;
  width: 50px;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 8px solid #0000;
  border-right-color: #e94b4b;
  animation: l24 1s infinite linear;
}
.loader:before,
.loader:after {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: inherit;
  animation: inherit;
  animation-duration: 2s;
}
.loader:after {
  animation-duration: 4s;
}
@keyframes l24 {
  100% {transform: rotate(1turn)}
}