.aurora {
  .preloader {

  }
  .preloader-inner {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
  }

  .preloader-inner-circle {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    border-radius: 50%;
    border: calc(var(--f7-preloader-size) / 8) solid var(--f7-preloader-color);
    border-top-color: transparent;
    box-sizing: border-box;
    animation: aurora-preloader-rotate 1s linear infinite;
  }

  .preloader.color-multi .preloader-inner-circle {
    animation: aurora-preloader-rotate 1s linear infinite, aurora-preloader-multicolor 2s linear infinite;
  }
}

@keyframes aurora-preloader-rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
@keyframes aurora-preloader-multicolor {
  0%,
  100% {
    border-color: #2196f3;
    border-top-color: transparent;
  }
  25% {
    border-color: #ff3b30;
    border-top-color: transparent;
  }
  50% {
    border-color: #4cd964;
    border-top-color: transparent;
  }
  75% {
    border-color: #ff9500;
    border-top-color: transparent;
  }
}