open-vault/ui/app/styles/components/vault-loading.scss

@keyframes vault-loading-animation {
  0%,
  70%,
  100% {
    transform: scale3D(1, 1, 1);
  }

  35% {
    transform: scale3D(0, 0, 1);
  }
}

#vault-loading {
  polygon {
    animation: vault-loading-animation 1.3s infinite ease-in-out;
    transform-origin: 50% 50%;
    fill: #dce2e9;
  }

  .vault-loading-order-1 {
    animation-delay: 0.1s;
  }

  .vault-loading-order-2 {
    animation-delay: 0.2s;
  }

  .vault-loading-order-3 {
    animation-delay: 0.3s;
  }

  .vault-loading-order-4 {
    animation-delay: 0.4s;
  }
}

#vault-loading-animated {
  @media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
    // For IE11
    display: none;
  }
}

#vault-loading-static {
  display: none;
  font-size: 9px;

  @media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
    // For IE11
    display: block;
  }
}