open-consul/ui-v2/app/styles/components/loader.scss

html.template-loading main > div {
  @extend %loader;
}
%loader {
  display: flex;
  align-items: center;
  justify-content: center;
  height: calc(100vh - 90px - 48px - 50px);
}
%loader circle {
  animation: loader-animation 1.5s infinite ease-in-out;
  transform-origin: 50% 50%;
  fill: #efc4d8;
}

%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;
  border: 1px solid red;
}

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

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