.rw-number-picker {
  @half-width: @input-height / 2;

  .rw-btn {
    .make-btn-state();
    .height-calc(@half-width, @input-border-width);

    line-height: @half-width;
    line-height: ~"calc(@{half-width} - @{input-border-width})";
    display: block;
    border: none;
  }

  & .rw-select {
    vertical-align: middle;
    
    &,
    &:hover,
    &:active {
      box-shadow: none;
    }
  }
}