// 按钮组
.j-btn-group {
  @include center;

  div.jr-button-wrap {
    width: fit-content;

    &:first-of-type {
      margin-right: 10px;
    }

    &:last-of-type {
      margin-left: 10px;
    }
  }

  &.j-alone {
    div.jr-button-wrap {
      &:first-of-type {
        margin: 0;
      }
    }
  }

  // 三个按钮
  &.j-three {
    div.jr-button-wrap {
      &:nth-of-type(2) {
        margin: 0 10px;
      }
    }
  }
}