gecko-dev/dom/xml/resources/XMLMonoPrint.css

@charset "UTF-8";
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

@import url("chrome://global/content/xml/XMLPrettyPrint.css");

#top > .expander-open {
  font-family: monospace;
  white-space: pre;
}