newsupernova/vendor/magento/theme-frontend-luma/web/css/source/_breadcrumbs.less

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

//
//  Common
//  _____________________________________________

& when (@media-common = true) {
    .breadcrumbs {
        .lib-breadcrumbs();
    }
}

//
//  Mobile
//  _____________________________________________

.media-width(@extremum, @break) when (@extremum = 'max') and (@break = @screen__m) {
    .breadcrumbs {
        display: none;
    }
}