treeherder/ui/css/treeherder-navbar-panels.css

/*
 * Shared navbar panel settings
 */

.th-top-nav-options-panel {
    background-color: white;
    padding: 10px 10px 0;
    border-bottom: 1px solid black;
    max-height: 400px;
    overflow-y: auto;
    font-size: 12px;
}

/*
 * Update notification panel
 */

.update-alert-panel {
    border-radius: 0;
    margin-bottom: 0;
}

/*
 *  Active Filters panel
 */
.active-filters-bar {
    padding: 0 15px 0 15px;
    border: 1px solid transparent;
}