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TopLevelImageDocument.css
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
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 *
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 * for the specific language governing rights and limitations under the
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 * The Original Code is Mozilla.org code.
 *
 * Contributor(s):
 *   Carlo Alberto Ferraris <cafxx@strayorange.com>
 *   Jared Wein <jwein@mozilla.com>
 *
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
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/*
  This CSS stylesheet defines the rules to be applied to ImageDocuments that
  are top level (e.g. not iframes).
*/

body {
  background-color: #222;
  margin: 0;
}

/* We must declare the image as a block element. If we stay as
an inline element, our parent LineBox will be inline too and
ignore the available height during reflow.
This is bad during printing, it means tall image frames won't know
the size of the paper and cannot break into continuations along
multiple pages. */
img {
  display: block;
  position: absolute;
  margin: auto;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}
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