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---
title: font-variant-position
slug: Web/CSS/font-variant-position
translation_of: Web/CSS/font-variant-position
---
<div>{{CSSRef}}</div>
<p>The <strong><code>font-variant-position</code></strong> CSS property controls the use of alternate, smaller glyphs that are positioned as superscript or subscript.</p>
<p>The glyphs are positioned relative to the baseline of the font, which remains unchanged. These glyphs are typically used in {{HTMLElement("sub")}} and {{HTMLElement("sup")}} elements.</p>
<pre class="brush:css no-line-numbers">/* Keyword values */
font-variant-position: normal;
font-variant-position: sub;
font-variant-position: super;
/* Global values */
font-variant-position: inherit;
font-variant-position: initial;
font-variant-position: unset;
</pre>
<p>When the usage of these alternate glyphs is activated, if one character in the run doesn't have such a typographically-enhanced glyph, the whole set of characters of the run is rendered using a fallback method, synthesizing these glyphs.</p>
<p>These alternate glyphs share the same em-box and the same baseline as the rest of the font. They are merely graphically enhanced, and have no effect on the line-height and other box characteristics.</p>
<p>{{cssinfo}}</p>
<h2 id="语法">语法</h2>
<p>The <code>font-variant-position</code> property is specified as one of the keyword values listed below.</p>
<h3 id="可选值">可选值</h3>
<dl>
<dt><code>normal</code></dt>
<dd>Deactivates alternate superscript and subscript glyphs.</dd>
<dt><code>sub</code></dt>
<dd>Activates subscript alternate glyphs. If, in a given run, one such glyph is not available for a character, all the characters in the run are rendered using synthesized glyphs.</dd>
<dt><code>super</code></dt>
<dd>Activates superscript alternate glyphs. If, in a given run, one such glyph is not available for a character, all the characters in the run are rendered using synthesized glyphs.</dd>
</dl>
<h3 id="正式语法">正式语法</h3>
{{csssyntax}}
<h2 id="示例">示例</h2>
<h3 id="HTML">HTML</h3>
<pre class="brush:html"><p class="normal">Normal!</p>
<p class="super">Super!</p>
<p class="sub">Sub!</p>
</pre>
<h3 id="CSS">CSS</h3>
<pre class="brush:css">p {
display: inline;
}
.normal {
font-variant-position: normal;
}
.super {
font-variant-position: super;
}
.sub {
font-variant-position: sub;
}
</pre>
<h3 id="Result">Result</h3>
<p>{{ EmbedLiveSample('Examples') }}</p>
<h2 id="规范">规范</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">规范</th>
<th scope="col">状态</th>
<th scope="col">说明</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName('CSS3 Fonts', '#propdef-font-variant-position', 'font-variant-position')}}</td>
<td>{{Spec2('CSS3 Fonts')}}</td>
<td>Initial definition.</td>
</tr>
</tbody>
</table>
<h2 id="Browser_compatibility" name="Browser_compatibility">浏览器兼容性</h2>
<p>{{Compat("css.properties.font-variant-position")}}</p>
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