/* HTML: <div class="loader"></div> */
.loader {
  width: 50px;
  aspect-ratio: 1;
  display: grid;
}
.loader::before,
.loader::after {
  content:"";
  grid-area: 1/1;
  --c:no-repeat radial-gradient(farthest-side,#25b09b 92%,#0000);
  background:
    var(--c) 50%  0,
    var(--c) 50%  100%,
    var(--c) 100% 50%,
    var(--c) 0    50%;
  background-size: 12px 12px;
  animation: l12 1s infinite;
}
.loader::before {
  margin: 4px;
  filter: hue-rotate(45deg);
  background-size: 8px 8px;
  animation-timing-function: linear
}

@keyframes l12 {
  100%{transform: rotate(.5turn)}
}