.nut-avatar-group {
  background-size: 100% 100%;
  background-repeat: no-repeat;
  background-position: center center;
  display: flex;
  position: relative;
  flex: 0 0 auto; // 防止被压缩
  .nut-avatar {
    border: 1px solid #fff;
    &:not(:first-of-type) {
      margin-left: -8px;
    }
  }
}