hedgedoc/src/components/markdown-renderer/replace-components/image/lightbox.scss

/*!
 * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
 *
 * SPDX-License-Identifier: AGPL-3.0-only
 */

.lightbox img {
  max-width: calc(100vw - 3.5rem);
  max-height: calc(100vh - 3.5rem - 75px);
  object-fit: contain;
}