在div中居中显示垂直虚线

<div id="container"></div>

#container {
  width: 200px;
  height: 300px;
  border: 1px dashed #000;
  position: relative;
}

#container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 100%;
  border-left: 1px dashed #000;
}

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