@keyframes bui-loading-opacity {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
.delay-time-animation(@time;@totalTime:0.8s;) {
  animation: bui-loading-opacity @totalTime linear @time infinite;
}
.set-loading-icon-color(@count; @total:@count;) when(@count >= 0) {
  .bui-loading-group {
    .bui-loading-group-default {
      stroke: @cascader-loading-icon-color;
    }
  }
  .bui-loading-path-item:nth-child(@{count}) {
    .delay-time-animation(-0.8s + 0.1s * (@count - 1), 0.8s);
  }
  .set-loading-icon-color(@count - 1, @total);
}

.bui-loading-opacity-animation {
  .set-loading-icon-color(9)
}