magento-test/setup/view/styles/lib/variables/_buttons.less

// /**
//  * Copyright © Magento, Inc. All rights reserved.
//  * See COPYING.txt for license details.
//  */

//
//  Buttons
//  ---------------------------------------------

//  Sizes

@btn__base__font-size: 1.6rem;
@btn__base__padding-top: .45em;
@btn__base__padding-bottom: @btn__base__padding-top;
@btn__height__base: @btn__base__font-size * @base__line-height + @btn__base__font-size * @btn__base__padding-top + @btn__base__font-size * @btn__base__padding-bottom;