/* Fades only. Nothing slides, scales, or bounces. */
:root{
  --ease:cubic-bezier(0.2,0,0.2,1); /* @kind other */
  --dur-fast:120ms; /* @kind other */
  --dur:220ms; /* @kind other */
  --dur-slow:420ms; /* @kind other */   /* image fade-in on load */
  --transition-opacity:opacity var(--dur) var(--ease); /* @kind other */
}