tupianhecheng/library/styles/loading/inner-circles.css

.inner-circles-loader:not(:required) {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 50px;
  margin-bottom: 10px;
  overflow: hidden;
  text-indent: -9999px;
  background: rgba(25, 165, 152, 0.5);
  border-radius: 50%;
  transform: translate3d(0, 0, 0);
}

.inner-circles-loader:not(:required)::before,
.inner-circles-loader:not(:required)::after {
  position: absolute;
  top: 0;
  display: inline-block;
  width: 50px;
  height: 50px;
  content: '';
  border-radius: 50%;
}

.inner-circles-loader:not(:required)::before {
  left: 0;
  background: #c7efcf;
  transform-origin: 0 50%;
  animation: inner-circles-loader 3s infinite;
}

.inner-circles-loader:not(:required)::after {
  right: 0;
  background: #eef5db;
  transform-origin: 100% 50%;
  animation: inner-circles-loader 3s 0.2s reverse infinite;
}

@keyframes inner-circles-loader {
  0% {
    transform: rotate(0deg);
  }

  50% {
    transform: rotate(360deg);
  }

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