yintai-company-home/src/pages/About/History.module.css

.section {
  background: #e8eaed;
  background-image: repeating-linear-gradient(
    90deg,
    transparent,
    transparent .125rem,
    rgba(200, 200, 205, 0.3) .125rem,
    rgba(200, 200, 205, 0.3) .25rem
  );
  min-height: calc(100vh / var(--zoom-compensation, 1));
  width: 100%;
  padding: 6.25rem auto;
  padding-bottom: 9.375rem;
  display: flex;
  flex-direction: column;
}

.headRow {
  width: 100%;
  display: flex;
  justify-content: flex-end;
  margin-bottom: 6.25rem;
}

/* Timeline */
.timelineWrapper {
  position: relative;
  width: 100%;
}

.timelineLine {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: .125rem;
  background: #828F9E;
  transform: translateX(-50%);
}

.timelineContent {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timelineItem {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  min-height: 6rem;
  margin-bottom: 1rem;
  scroll-margin-top: 7.5rem;
}

.timelineItem .side {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  padding: .5rem 1.5rem;
  min-width: 0;
}

.timelineItem.left .side:first-child {
  text-align: right;
  align-items: flex-end;
}

.timelineItem.right .side:last-child {
  text-align: left;
  align-items: flex-start;
}

.timelineItem .side:empty {
  min-height: .0625rem;
}

.year {
  font-size: 2.5rem;
  color: #222;
  line-height: 1.2;
}

.desc {
  font-size: 1.25rem;
  line-height: 1.6;
  color: #333;
  margin: 0;
  max-width: 37.5rem;
  margin-top: 1.25rem;

  list-style: disc;
  margin-left: 1.25rem;
}

.timelineItem.left .desc {
  text-align: right;
  list-style: none;
  margin-left: 0;
  margin-right: 1.25rem;
}


.timelineItem.left li {
  display: flex;
  flex-direction: row;
  justify-content: flex-end;
}
.timelineItem.left li.desc::after {
  content: "•";
  display: block;
  margin-left: 0.5em;
}

.dotWrapper {
  position: relative;
  flex-shrink: 0;
  width: 3.75rem;
  height: 3.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  background: #E8F3FF;
  border-radius: 50%;
}

.dot {
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  background: #3875FF;
}

.dotWrapper.selected {
  width: 3.75rem;
  height: 3.75rem;
  background: #e8eaed;
}

.dotWrapper.selected .dot {
  width: 1.25rem;
  height: 1.25rem;
  background: #14355C;
  transition: all 0.3s ease-in-out;
}

.dotWrapper.selected::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 3.75rem;
  height: 3.75rem;
  border: .125rem solid #14355C;
  border-radius: 50%;
  background: transparent;
  transition: all 0.3s ease-in-out;
}

.dotLine {
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translateX(-50%);
  width: .375rem;
  min-height: 0;
  background: #14355C;
  transition: all 0.9s ease-in-out;
}


@media (max-width: 64rem) {
  .section {
    padding: 4rem 4rem;
  }

  .headRow {
    margin-bottom: 4rem;
  }
}

@media (max-width: 48rem) {
  .section {
    padding: 2rem 1rem;
    min-height: auto;
  }

  .headRow {
    margin-bottom: 2rem;
  }

  .timelineLine {
    left: 1.875rem;
  }

  .timelineItem {
    flex-direction: row !important;
  }

  .timelineItem .side:first-child {
    display: none;
  }

  .timelineItem .side:last-child {
    text-align: left !important;
    align-items: flex-start !important;
  }

  .timelineItem.left .desc {
    text-align: left;
    margin-left: 1.25rem;
    margin-right: 0;
    list-style: disc;
  }

  .timelineItem.left li {
    justify-content: flex-start;
  }

  .timelineItem.left li.desc::after {
    display: none;
  }

  .dotWrapper {
    width: 2.5rem;
    height: 2.5rem;
    flex-shrink: 0;
  }

  .dotWrapper.selected {
    width: 2.5rem;
    height: 2.5rem;
  }

  .dotWrapper.selected::before {
    width: 2.5rem;
    height: 2.5rem;
  }

  .year {
    font-size: 1.75rem;
  }

  .desc {
    font-size: 1rem;
    max-width: none;
  }
}

@media (max-width: 30rem) {
  .section {
    padding: 1.5rem 0.75rem;
  }

  .year {
    font-size: 1.5rem;
  }
}