@vaadin/vaadin-lumo-styles/src/components/details.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_details {
  :host {
    margin: var(--lumo-space-xs) 0;
    outline: none;
    --_focus-ring-color: var(--vaadin-focus-ring-color, var(--lumo-primary-color-50pct));
    --_focus-ring-width: var(--vaadin-focus-ring-width, 2px);
  }

  :host([focus-ring]) ::slotted([slot='summary']) {
    box-shadow: 0 0 0 var(--_focus-ring-width) var(--_focus-ring-color);
  }

  [part='content'] {
    padding: var(--lumo-space-xs) 0 var(--lumo-space-s);
    font-size: var(--lumo-font-size-m);
    line-height: var(--lumo-line-height-m);
  }

  :host([theme~='filled']) {
    background-color: var(--lumo-contrast-5pct);
    border-radius: var(--lumo-border-radius-m);
  }

  :host([theme~='filled']) [part='content'] {
    padding-left: var(--lumo-space-m);
    padding-right: var(--lumo-space-m);
  }

  :host([theme~='small']) [part$='content'] {
    font-size: var(--lumo-font-size-s);
  }
}