html,
body {
  margin: 0;
  min-height: 100%;
  background-color: #000;
}

#root { min-height: 100vh; }
.app-initial-loader {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #000;
}
.app-initial-loader__spinner {
  width: 44px;
  height: 44px;
  border: 3px solid rgba(255, 255, 255, 0.14);
  border-top-color: rgba(255, 255, 255, 0.92);
  border-radius: 50%;
  animation: app-initial-spin 0.75s linear infinite;
}
@keyframes app-initial-spin { to { transform: rotate(360deg); } }