js 横向时间轴

<div class="timeline-container">
  <ul class="timeline">
    <li class="timeline-item" data-year="2020">事件1</li>
    <li class="timeline-item" data-year="2021">事件2</li>
    <li class="timeline-item" data-year="2022">事件3</li>
    <!-- 更多事件 -->
  </ul>
</div>

.timeline-container {
  overflow-x: auto;
  white-space: nowrap;
}

.timeline {
  display: flex;
  list-style: none;
  padding: 0;
}

.timeline-item {
  position: relative;
  padding: 10px 20px;
  margin-right: 10px;
  background-color: #f1f1f1;
  border-radius: 5px;
}

.timeline-item::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -5px;
  width: 10px;
  height: 10px;
  background-color: #ccc;
  border-radius: 50%;
  transform: translateY(-50%);
}

document.querySelectorAll('.timeline-item').forEach(item => {
  item.addEventListener('click', () => {
    alert(`事件发生在 ${item.dataset.year}`);
  });
});

@media (max-width: 600px) {
  .timeline-item {
    padding: 5px 10px;
    font-size: 14px;
  }
}