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The font-variant-position
CSS property controls the use of alternate, smaller glyphs that are positioned as superscript or subscript.
The glyphs are positioned relative to the baseline of the font, which remains unchanged. These glyphs are typically used in <sub>
and <sup>
elements.
/* 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;
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.
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.
初始值 | normal |
---|---|
适用元素 | all elements. It also applies to ::first-letter and ::first-line . |
是否是继承属性 | yes |
适用媒体 | visual |
计算值 | as specified |
Animation type | discrete |
正规顺序 | the unique non-ambiguous order defined by the formal grammar |
语法
The font-variant-position
property is specified as one of the keyword values listed below.
可选值
normal
- Deactivates alternate superscript and subscript glyphs.
sub
- 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.
super
- 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.
正式语法
normal | sub | super
示例
HTML
<p class="normal">Normal!</p> <p class="super">Super!</p> <p class="sub">Sub!</p>
CSS
p { display: inline; } .normal { font-variant-position: normal; } .super { font-variant-position: super; } .sub { font-variant-position: sub; }
Result
规范
规范 | 状态 | 说明 |
---|---|---|
CSS Fonts Module Level 3 font-variant-position |
Candidate Recommendation | Initial definition. |
浏览器兼容性
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
font-variant-position | Chrome No support No | Edge No support No | Firefox
Full support
34
| IE No support No | Opera No support No | Safari No support No | WebView Android No support No | Chrome Android No support No | Firefox Android
Full support
34
| Opera Android No support No | Safari iOS No support No | Samsung Internet Android No support No |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- User must explicitly enable this feature.
- User must explicitly enable this feature.