如何在ionic 4中使用css将时间轴居中

display: flex;
justify-content: center;
align-items: center;

<div class="timeline-container">
  <div class="timeline-node"></div>
  <div class="timeline-line"></div>
  <div class="timeline-node"></div>
  <div class="timeline-line"></div>
  <div class="timeline-node"></div>
</div>

.timeline-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.timeline-node {
  width: 20px;
  height: 20px;
  background-color: #000;
  border-radius: 50%;
}

.timeline-line {
  width: 2px;
  height: 50px;
  background-color: #000;
}