newsupernova/vendor/magento/theme-adminhtml-backend/web/css/source/utilities/_spinner.less

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

._spinner-keyframes() {
    @-moz-keyframes @spinner-keyframe-name {
        0% {
            background-color: @spinner-first-color;
        }

        100% {
            background-color: @spinner-second-color;
        }
    }

    @-webkit-keyframes @spinner-keyframe-name {
        0% {
            background-color: @spinner-first-color;
        }

        100% {
            background-color: @spinner-second-color;
        }
    }

    @-ms-keyframes @spinner-keyframe-name {
        0% {
            background-color: @spinner-first-color;
        }

        100% {
            background-color: @spinner-second-color;
        }
    }

    @keyframes @spinner-keyframe-name {
        0% {
            background-color: @spinner-first-color;
        }

        100% {
            background-color: @spinner-second-color;
        }
    }
}

._spinner-loop(
    @_spinner-spin-count: @spinner-spin-count,
    @_spinner-rotate: @spinner-rotate,
    @_spinner-delay: @spinner-delay
) when (@_spinner-spin-count > 0) {
    ._spinner-loop(
        (@_spinner-spin-count - 1),
        (@_spinner-rotate - @spinner-rotate-step),
        (@_spinner-delay - @spinner-animation-step)
    );

    > span {
        &:nth-child(@{_spinner-spin-count}) {
            -webkit-animation-delay: @_spinner-delay;
            -moz-animation-delay: @_spinner-delay;
            -ms-animation-delay: @_spinner-delay;
            animation-delay: @_spinner-delay;

            -webkit-transform: ~'rotate(@{_spinner-rotate}deg)';
            -moz-transform: ~'rotate(@{_spinner-rotate}deg)';
            -ms-transform: ~'rotate(@{_spinner-rotate}deg)';
            transform: ~'rotate(@{_spinner-rotate}deg)';
        }
    }
}

._spinner_transform() {
    -webkit-transform: @spinner-animation-transform;
    -moz-transform: @spinner-animation-transform;
    -ms-transform: @spinner-animation-transform;
    transform: @spinner-animation-transform;

    -webkit-animation-name: @spinner-keyframe-name;
    -moz-animation-name: @spinner-keyframe-name;
    -ms-animation-name: @spinner-keyframe-name;
    animation-name: @spinner-keyframe-name;

    -webkit-animation-duration: @spinner-animation-duration;
    -moz-animation-duration: @spinner-animation-duration;
    -ms-animation-duration: @spinner-animation-duration;
    animation-duration: @spinner-animation-duration;

    -webkit-animation-iteration-count: @spinner-animation-iteration-count;
    -moz-animation-iteration-count: @spinner-animation-iteration-count;
    -ms-animation-iteration-count: @spinner-animation-iteration-count;
    animation-iteration-count: @spinner-animation-iteration-count;

    -webkit-animation-direction: @spinner-animation-direction;
    -moz-animation-direction: @spinner-animation-direction;
    -ms-animation-direction: @spinner-animation-direction;
    animation-direction: @spinner-animation-direction;
}