.cta-shimmer {
  animation: cta-shimmer 4s ease-in-out infinite alternate;
  background-size: 220% 100%;
  background-position: -20% 50%;
  opacity: 0.1;
  will-change: background-position, opacity;
}

@keyframes cta-shimmer {
  0% {
    opacity: 0.08;
    background-position: -20% 50%;
  }
  35% {
    opacity: 0.5;
  }
  65% {
    opacity: 0.28;
    background-position: 120% 50%;
  }
  100% {
    opacity: 0.08;
    background-position: 120% 50%;
  }
}