*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
  background: #000;
  color: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  overflow: hidden;
}

main {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  width: 100vw;
}

.spinner {
  width: clamp(70px, 12vmin, 130px);
  aspect-ratio: 1 / 1;
  animation: spin 3.6s linear infinite;
  transform-origin: 50% 50%;
  will-change: transform;
}

.spinner img {
  width: 100%;
  height: 100%;
  display: block;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
  .spinner { animation-duration: 6s; }
}