vant-weapp/dist/vsteps/index.wxss

.zui-vsteps {
  position: relative;
  padding: 15px;
  color: #999;
  font-size: 14px;
}

.zui-vsteps::after {
  left: 42px;
}

.zui-vsteps--active {
  color: #44BB00;
}

.zui-vsteps__line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 22px;
  width: 1px;
  background-color: #e5e5e5;
}

.zui-vsteps__content {
  padding-left: 27px;
}

.zui-vsteps__icons {
  position: absolute;
  left: 22px;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  font-size: 0;
  line-height: 0;
  padding: 3px 0;
  background-color: #fff;
}

.zui-vsteps__icon {

}

.zui-vsteps__icon--normal {
  width: 5px;
  height: 5px;
  background-color: #cacaca;
  border-radius: 10px;
}

.zui-vsteps__icon--active {
  width: 13px;
  height: 13px;
}

.zui-vsteps--first-child .zui-vsteps__title::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 50%;
  left: 22px;
  width: 1px;
  background-color: #fff;
  z-index: 1;
}

.zui-vsteps--last-child .zui-vsteps__title::before {
  content: '';
  position: absolute;
  top: 50%;
  bottom: 0%;
  left: 22px;
  width: 1px;
  background-color: #fff;
  z-index: 1;
}