gecko-dev/toolkit/content/plugins.css

/* 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/. */

/* ===== plugins.css =====================================================
   == Styles used by the about:plugins page.
   ======================================================================= */

body {
  background-color: -moz-Field;
  color: -moz-FieldText;
  font: message-box;
}

div#outside {
 text-align: justify;
 width: 90%;
 margin-left: 5%;
 margin-right: 5%;
}

#plugs {
  text-align: center;
  font-size: xx-large;
  font-weight: bold;
}

#noplugs {
  font-size: x-large;
  font-weight: bold;
}

div#findpluginupdates {
  margin-top: 2em;
}

.plugname {
  margin-top: 2em;
  margin-bottom: 1em;
  font-size: large;
  text-align: start;
  font-weight: bold;
}

dl {
  margin: 0px 0px 3px 0px;
}

table {
  background-color: -moz-Dialog;
  color: -moz-DialogText;
  font: message-box;
  text-align: start;
  width: 100%;
  border: 1px solid ThreeDShadow;
  border-spacing: 0px;
}

th, td {
  border: none;
  padding: 3px;
}

th {
  text-align: center;
  background-color: Highlight;
  color: HighlightText;
}

th + th,
td + td {
  -moz-border-start: 1px dotted ThreeDShadow; 
}

td {
  text-align: start;
  border-top: 1px dotted ThreeDShadow;
}

th.type, th.suff {
  width: 25%;
}

th.desc {
  width: 50%;
}