vant-weapp/zui/steps/index.wxss

.zui-steps {
  position: relative;
}

.zui-steps-4 .zui-steps__step {
  width: 33%;
}

.zui-steps-3 .zui-steps__step {
  width: 50%;
}

.zui-steps__step {
  position: relative;
  float: left;
  padding-bottom: 20px;
  color: #b1b1b1;
}

.zui-steps__title {
  display: inline-block;
  transform: translateX(-50%);
  margin-left: 2px;
  font-size: 10px;
}

.zui-steps__icon {
  position: absolute;
  top: 28px;
  left: -8px;
  padding: 0 8px;
  background-color: #fff;
  z-index: 10;
}

.zui-steps__circle {
  display: block;
  position: relative;
  width: 5px;
  height: 5px;
  background-color: #e5e5e5;
  border-radius: 50%;
}

.zui-steps__line {
  position: absolute;
  left: 0px;
  top: 30px;
  width: 100%;
  height: 1px;
  background-color: #e5e5e5;
}


/* 已完成的steps */
.zui-steps__step--done {
  color: #333;
}

.zui-steps__step--done .zui-steps__line {
  background-color: #06bf04;
}

.zui-steps__step--done .zui-steps__circle {
  width: 5px;
  height: 5px;
  background: transparent url("https://b.yzcdn.cn/v2/image/wap/trade/steps/icon_green@2x.png") center no-repeat;
  background-size: 5px 5px;
  border-radius: 0;
}

/* 正在进行中的steps */
.zui-steps__step--cur .zui-steps__icon {
  top: 24px;
}

.zui-steps__step--cur .zui-steps__circle {
  width: 13px;
  height: 13px;
  background-image: url("https://b.yzcdn.cn/v2/image/wap/success_small@2x.png");
  background-size: 13px 13px;
}

.zui-steps__step--cur .zui-steps__title {
  margin-left: 6px;
}

.zui-steps__step--cur .zui-steps__line {
  background-color: #e5e5e5;
}

/* 各种不同位置的 */
.zui-steps__step--first-child .zui-steps__title {
  margin-left: 0;
  transform: none;
}

.zui-steps__step--last-child {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  text-align: right;
}

.zui-steps__step--last-child .zui-steps__title {
  transform: none;
}

.zui-steps__step--last-child .zui-steps__icon {
  left: auto;
  right: -6px;
}

.zui-steps__step--last-child .zui-steps__line {
  display: none;
}