style.css

body {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 20%;
  background-color: rgb(103, 52, 83);
}

.container,
.container * {
  box-sizing: border-box;
}

.container {
  position: relative;
  height: 8rem;
  width: 8rem;
}

.container .top {
  position: absolute;
  height: 100%;
  width: 100%;
  animation: revolve 2s infinite;
}

.container .top:nth-child(1) {
  padding: calc(8rem * 5 * 2 * 0 / 110);
  animation-delay: 300ms;
}

.container .top:nth-child(2) {
  padding: calc(8rem * 5 * 2 * 1 / 110);
  animation-delay: 300ms;
}

.container .top:nth-child(3) {
  padding: calc(8rem * 5 * 2 * 2 / 110);
  animation-delay: 300ms;
}

.container .top:nth-child(4) {
  padding: calc(8rem * 5 * 2 * 3 / 110);
  animation-delay: 0ms;
}

.container .low,
.container .medium {
  height: 100%;
  width: 100%;
  border-radius: 50%;
  border: calc(8rem * 5 / 110) solid transparent;
}

.container .low {
  border-left-color: #1dffa5;
  border-right-color: #1dcaff;
}

@keyframes revolve {
  50% {
    transform: rotate(180deg);
  }

  100% {
    transform: rotate(0deg);
  }
}