@mixin btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 40upx;
}

.btn {
  &-small {
    @include btn;
    display: inline-flex;
    height: 60upx;
  }

  &-medium {
    @include btn;
    display: inline-flex;
    height: 80upx;
  }

  &-large {
    @include btn;
    height: 90upx;
  }
}