@vaadin/vaadin-lumo-styles/src/components/combo-box.css

Lumo is a design system foundation for modern web applications, used by Vaadin components

/**
 * @license
 * Copyright (c) 2017 - 2026 Vaadin Ltd.
 * This program is available under Apache License Version 2.0, available at https://vaadin.com/license/
 */
@media lumo_components_combo-box {
  :host([opened]) {
    pointer-events: auto;
  }

  [part~='toggle-button']::before {
    content: var(--lumo-icons-dropdown);
  }
}