newsupernova/vendor/magento/theme-adminhtml-backend/web/css/source/components/_slider.less

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

//
//  Variables
//  _____________________________________________

@data-slider-track__background-color: @color-gray-light3;
@data-slider-track__font-size: 1.1rem;
@data-slider-track__height: .1rem;
@data-slider-track__width: 100%;
@data-slider-track__z-index: @z-index-1;

@data-slider-handle__background-color: @color-white-smoke;
@data-slider-handle__border-color: @color-gray76;
@data-slider-handle__box-shadow: 0 1px 2px 2px rgba(0, 0, 0, .03);
@data-slider-handle__height: 2.2rem;
@data-slider-handle__width: @data-slider-handle__height;

@data-slider-handle-accent__background-color__end: @color-white-fog;
@data-slider-handle-accent__background-color__start: @color-gray-light2;
@data-slider-handle-accent__height: .8rem;
@data-slider-handle-accent__width: @data-slider-handle-accent__height;

//
//  Slider
//  _____________________________________________

.data-slider {
    &:extend(.abs-clearfix all);
    background: none;
    font-size: @data-slider-track__font-size;
    min-height: @data-slider-handle__height;
    padding-top: 1.2rem;
    position: relative;
    width: @data-slider-track__width;

    &:before {
        background: @data-slider-track__background-color;
        content: '';
        display: block;
        height: @data-slider-track__height;
        position: absolute;
        top: 0;
        width: 100%;
        z-index: @data-slider-track__z-index;
    }

    .ui-slider-handle {
        .data-slider-handle;
    }
}

.data-slider-from {
    float: left;
}

.data-slider-to {
    float: right;
}

.data-slider-handle {
    background: @data-slider-handle__background-color;
    border: 1px solid @data-slider-handle__border-color;
    border-radius: 50%;
    box-shadow: @data-slider-handle__box-shadow;
    cursor: pointer;
    display: block;
    height: @data-slider-handle__height;
    margin-left: -@data-slider-handle__width / 2 !important;
    position: absolute;
    top: -@data-slider-handle__height / 2;
    width: @data-slider-handle__width;
    z-index: @data-slider-track__z-index + 1 !important;

    &:before {
        .lib-background-gradient(
        @_background-gradient: true,
        @_background-gradient-direction: vertical,
        @_background-gradient-color-start: @data-slider-handle-accent__background-color__start,
        @_background-gradient-color-end: @data-slider-handle-accent__background-color__end,
        @_background-gradient-color-position: false
        );
        border-radius: 50%;
        content: '';
        display: block;
        height: @data-slider-handle-accent__height;
        left: 50%;
        margin: -@data-slider-handle-accent__height / 2 0 0 -@data-slider-handle-accent__width / 2;
        position: absolute;
        top: 50%;
        width: @data-slider-handle-accent__width;
    }
}