.curtain-wrapper {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.curtain-overlay {
  position: absolute;
  inset: 0;
  background: white;
  z-index: 2;
  transform: translateY(100%);
  will-change: transform;
}

.curtain-content {
  position: relative;
  z-index: 1;
}