open-consul/ui/packages/consul-ui/app/components/consul/loader/skin.scss

%loader circle {
  fill: var(--brand-100);
}
%loader circle {
  animation: loader-animation 1.5s infinite ease-in-out;
  transform-origin: 50% 50%;
}

%loader g:nth-last-child(2) circle {
  animation-delay: 0.2s;
}

%loader g:nth-last-child(3) circle {
  animation-delay: 0.3s;
}

%loader g:nth-last-child(4) circle {
  animation-delay: 0.4s;
}

%loader g:nth-last-child(5) circle {
  animation-delay: 0.5s;
}

@keyframes loader-animation {
  0%,
  100% {
    transform: scale3D(1, 1, 1);
  }

  33% {
    transform: scale3D(0, 0, 1);
  }
}