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--- a/files/ja/archive/web/css/_colon_-moz-system-metric/index.html
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----
-title: ':-moz-system-metric()'
-slug: 'Archive/Web/CSS/:-moz-system-metric'
-tags:
-  - ':-moz-system-metric'
-  - CSS
-  - 'CSS:Mozilla Extensions'
-  - NeedsTranslation
-  - Non-standard
-  - Obsolete
-  - Pseudo-class
-  - TopicStub
-translation_of: 'Archive/Web/CSS/:-moz-system-metric'
----
-<p>{{CSSRef}}{{Draft}}{{Non-standard_Header}}{{Obsolete_Header("gecko58")}}</p>
-
-<p>{{wiki.localize("System.API.page-generated-for-subpage")}}</p>
-
-<div class="blockIndicator note">
-<p><strong>Note</strong>: Since <a href="/en-US/docs/Mozilla/Firefox/Releases/58">Firefox 58</a>, this pseudo-class is no longer available to web content — it is only available internally (e.g. to XUL / chrome code). See {{bug(1396066)}} for more details.</p>
-</div>
-
-<h2 id="Syntax">Syntax</h2>
-
-<h3 id="Values">Values</h3>
-
-<p>{{SubpagesWithSummaries}}</p>
-
-<h3 id="Formal_syntax">Formal syntax</h3>
-
-<pre class="syntaxbox notranslate">{{CSSSyntax}}</pre>
-
-<h2 id="Browser_compatibility">Browser compatibility</h2>
-
-
-
-<p>{{Compat("css.selectors.-moz-system-metric")}}</p>
-
-<h2 id="See_also">See also</h2>
-
-<ul>
- <li>{{CSSxRef("@media")}}</li>
-</ul>