ggadmin/public/assets/libs/bootstrap-table/dist/extensions/sticky-header/bootstrap-table-sticky-header.css

/**
 * @author vincent loh <vincent.ml@gmail.com>
 * @version: v1.0.0
 * https://github.com/vinzloh/bootstrap-table/
 * Sticky header for bootstrap-table
 */

.fix-sticky {
    position: fixed;
    z-index: 100;
}
.fix-sticky thead {
    background: #fff;
}

.fix-sticky thead th,
.fix-sticky thead th:first-child {
    border-left: 0;
    border-right: 0;
    border-bottom: 1px solid #eee;
    border-radius: 0;
}