* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    sans-serif;
  background: #ffffff;
  color: #171717;
}

.story {
  padding: 4rem 1rem;
}

.intro {
  max-width: 36rem;
  margin: 0 auto;
  text-align: center;
}

.eyebrow {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: #a3a3a3;
}

.heading {
  margin: 0.75rem 0 0;
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #171717;
}

.entries {
  margin: 4rem auto 0;
  max-width: 72rem;
  display: flex;
  flex-direction: column;
  gap: 5rem;
}

.entry {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 2rem;
}

.entry__year {
  display: block;
  font-size: clamp(3.5rem, 2.5rem + 4vw, 7rem);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #f5f5f5;
  user-select: none;
}

.entry__title {
  margin-top: -1rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: #171717;
}

.entry__desc {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: #737373;
}

.entry__mask {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 1rem;
  background: #f5f5f5;
}

.entry__mask img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 1024px) {
  .entry {
    grid-template-columns: 5fr 7fr;
    gap: 3rem;
  }

  .entry--reverse {
    grid-template-columns: 7fr 5fr;
  }

  .entry--reverse .entry__text {
    order: 1;
  }

  .entry--reverse .entry__media {
    order: 2;
  }

  .entry__title {
    margin-top: -1.5rem;
    font-size: 1.5rem;
  }

  .entry__desc {
    font-size: 1rem;
  }

  .entry__mask {
    aspect-ratio: 16 / 10;
  }
}

/*
 * Timeline 03 — "editorial mask reveal" animation identity. Same canonical
 * keyframes as `Timeline03.tailwind.css`; see script.js for the
 * IntersectionObserver that adds `is-visible` once.
 */
@keyframes al-timeline03-fade {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes al-timeline03-wipe {
  from {
    clip-path: inset(0 0 0 100%);
  }
  to {
    clip-path: inset(0 0 0 0%);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .al-timeline03.al-timeline03-js .entry {
    opacity: 0;
    transform: translateY(20px);
  }

  .al-timeline03.al-timeline03-js.is-visible .entry {
    animation: al-timeline03-fade 650ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .al-timeline03.al-timeline03-js .entry__mask {
    clip-path: inset(0 0 0 100%);
  }

  .al-timeline03.al-timeline03-js.is-visible .entry__mask {
    animation: al-timeline03-wipe 750ms cubic-bezier(0.65, 0, 0.35, 1) 150ms both;
  }
}
Timeline 03

Requirements

Dependencies

Usage
