brand-arrival-wechat/dist/dev/mp-weixin/static/normal.scss

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

.flex-start-btw {
  display: flex;
  align-items: start;
  justify-content: space-between;
}

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

.flex-center-btw {
  display: flex;
  align-items: center;
  justify-content: space-between;
}