@vaadin/vaadin-lumo-styles/src/components/rich-text-editor-popup-overlay.css

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

/**
 * @license
 * Copyright (c) 2000 - 2026 Vaadin Ltd.
 * This program is available under Apache License Version 2.0, available at https://vaadin.com/license/
 */
@media lumo_components_rich-text-editor-popup-overlay {
  :host {
    --_focus-ring-color: var(--vaadin-focus-ring-color, var(--lumo-primary-color-50pct));
    --_focus-ring-width: var(--vaadin-focus-ring-width, 2px);
  }

  [part='overlay'] {
    margin: var(--lumo-space-xs) 0;
  }

  [part='content'] {
    padding: var(--lumo-space-xs);
    max-width: calc(7 * (var(--_button-size) + var(--_button-margin) * 2));
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    --_button-size: 1.25rem;
    --_button-margin: 3px;
  }

  [part='content'] ::slotted(button) {
    border: none;
    background-color: var(--_btn-background);
    width: var(--_button-size);
    height: var(--_button-size);
    margin: var(--_button-margin);
  }

  [part='content'] ::slotted(button:focus-visible) {
    outline: var(--_focus-ring-width) solid var(--_focus-ring-color);
    outline-offset: calc(var(--_focus-ring-width) * -1 + 1px);
  }

  [part='content'] ::slotted(button:first-of-type) {
    position: relative;
    border: solid 1px var(--lumo-contrast-10pct);
    background-image: repeating-linear-gradient(
      135deg,
      transparent 0%,
      transparent 47%,
      red 50%,
      transparent 53%,
      transparent 100%
    );
    background-color: transparent;
    background-clip: padding-box;
  }
}