MMM-PhotoStack/MMM-PhotoStack.css at main · Skarabaeus/MMM-PhotoStack · GitHub

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/* MMM-PhotoStack — polaroid-style photo stack with fly-in/fly-out animations */

.photostack-container {
  position: relative;
  background-color: var(--background-color, black);
  width: calc(var(--photo-width) + var(--frame-width) * 2 + 80px);
  height: calc(var(--photo-width) * 0.75 + var(--frame-width) * 3.5 + 80px);
  perspective: 1000px;
  margin: 0 auto;
}

.photostack-card {
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--frame-color);
  padding: var(--frame-width);
  padding-bottom: calc(var(--frame-width) * 2.5);
  box-shadow:
    0 8px 24px rgba(0, 0, 0, 0.4),
    0 2px 6px rgba(0, 0, 0, 0.3);
  transform: translate(
      calc(-50% + var(--rest-x)),
      calc(-50% + var(--rest-y))
    )
    rotate(var(--rest-rotate));
  transition: transform 600ms cubic-bezier(0.2, 0.8, 0.2, 1.05);
  will-change: transform;
}

.photostack-image {
  display: block;
  width: var(--photo-width);
  height: calc(var(--photo-width) * 0.75);
  object-fit: cover;
}

/* Fly-in: card sweeps from off-screen origin into its tilted resting pose. */
@keyframes photostack-fly-in {
  from {
    transform: translate(
        calc(-50% + var(--in-x)),
        calc(-50% + var(--in-y))
      )
      rotate(0deg)
      scale(1.1);
  }
  to {
    transform: translate(
        calc(-50% + var(--rest-x)),
        calc(-50% + var(--rest-y))
      )
      rotate(var(--rest-rotate));
  }
}

.photostack-card.photostack-fly-in {
  animation: photostack-fly-in var(--fly-in-duration)
    cubic-bezier(0.2, 0.8, 0.2, 1.05) both;
}

/* Fly-out: card falls down and fades when bumped from the stack. */
@keyframes photostack-fly-out {
  from {
    transform: translate(
        calc(-50% + var(--rest-x)),
        calc(-50% + var(--rest-y))
      )
      rotate(var(--rest-rotate));
    opacity: 1;
  }
  to {
    transform: translate(
        calc(-50% + var(--rest-x)),
        calc(-50% + var(--rest-y) + 200px)
      )
      rotate(var(--rest-rotate));
    opacity: 0;
  }
}

.photostack-card.photostack-fly-out {
  animation: photostack-fly-out var(--fly-out-duration) ease-in both;
  pointer-events: none;
}