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

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

//
//  Block 'Insert File'
//  _________________________________________

.contents-uploader {
    margin: 0 0 @indent__base;

    .fileinput-button {
        cursor: pointer;
        display: inline-block;
        float: none;
        vertical-align: middle;

        span {
            font-weight: 600;
            padding-right: 1em;
        }

        input {
            -moz-transform: none;
            border: none;
            opacity: 1;
            position: static;
            transform: none;
        }
    }
}

.file-row {
    border: 1px solid @color-gray68;
    margin: @indent__xs 0;
    padding: 2px;
}

.filecnt {
    border: 1px solid @color-gray68;
    cursor: pointer;
    display: inline-block;
    margin: 0 @indent__xs 15px 0;
    overflow: hidden;
    padding: 3px;
    text-overflow: ellipsis;
    width: 100px;

    &.selected {
        border-color: @color-blue-dodger;
    }

    p {
        text-align: center;
    }
}