点滅ロケーション

↓HTML or PHP

<div class="loader"></div>

↓CSS

.loader {
  width: 40px;
  aspect-ratio: 1;
  position: relative;
  transform: rotate(45deg);
}
.loader:before,
.loader:after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50% 50% 0 50%;
  background: #514b82;
  -webkit-mask: radial-gradient(circle 10px at 50% 50%,#0000 94%,#000);
}
.loader:after {
  animation: l6 1s infinite;
  transform: perspective(300px) translateZ(0px)
}
@keyframes l6 {
  to {transform: perspective(300px) translateZ(150px);opacity:0}
}