pleroma/packages/pl-fe/src/styles/loading.scss

.loading-indicator-wrapper {
  @apply h-screen w-screen flex justify-center items-center;
}

.loading-indicator {
  @apply text-gray-50 text-xs uppercase flex flex-col items-center justify-center overflow-visible;
}

.loading-indicator__container {
  @apply w-10 h-10 relative;
}

.loading-indicator__figure {
  @apply absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 w-12 h-12 rounded-full bg-transparent;
  border: 0 solid;
  border-width: 6px;
  border-color: #e5e7eb;
}

.no-reduce-motion .loading-indicator span {
  animation: loader-label 1.15s infinite cubic-bezier(0.215, 0.61, 0.355, 1);
}

.no-reduce-motion .loading-indicator__figure {
  animation: loader-figure 1.15s infinite cubic-bezier(0.215, 0.61, 0.355, 1);
}

.loading-indicator-wrapper .loading-indicator {
  @apply h-screen w-screen items-center;

  &__figure {
    @apply border-gray-200;
  }
}

@keyframes loader-figure {
  0% {
    @apply bg-gray-200 w-0 h-0;
  }

  29% {
    @apply bg-gray-200;
  }

  30% {
    @apply w-12 h-12 bg-transparent opacity-100;
    border-width: 6px;
  }

  100% {
    @apply w-12 h-12 border-0 opacity-0 bg-transparent;
  }
}

@keyframes loader-label {
  0% { opacity: 0.25; }
  30% { opacity: 1; }
  100% { opacity: 0.25; }
}

@keyframes heartbeat {
  0% {
    transform: scale(1);
    animation-timing-function: ease-out;
  }

  10% {
    transform: scale(0.91);
    animation-timing-function: ease-in;
  }

  17% {
    transform: scale(0.98);
    animation-timing-function: ease-out;
  }

  33% {
    transform: scale(0.87);
    animation-timing-function: ease-in;
  }

  45% {
    transform: scale(1);
    animation-timing-function: ease-out;
  }
}

.no-reduce-motion .pulse-loading {
  transform-origin: center center;
  animation: heartbeat 1.5s ease-in-out infinite both;
}

.ptr,
.ptr__children {
  @apply overflow-visible #{!important};
}