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@font-feature-values

The @font-feature-values CSS at-rule lets you use a common name in the font-variant-alternates property for features activated differently in OpenType. This can help simplify your CSS when using multiple fonts.

The @font-feature-values at-rule may be used either at the top level of your CSS or inside any CSS conditional-group at-rule.

Syntax

Feature value blocks

@swash

Specifies a feature name that will work with the swash() functional notation of font-variant-alternates. A swash feature value definition allows only one value: ident1: 2 is valid, but ident2: 2 4 isn't.

@annotation

Specifies a feature name that will work with the annotation() functional notation of font-variant-alternates. An annotation feature value definition allows only one value: ident1: 2 is valid, but ident2: 2 4 isn't.

@ornaments

Specifies a feature name that will work with the ornaments() functional notation of font-variant-alternates. An ornaments feature value definition allows only one value: ident1: 2 is valid, but ident2: 2 4 isn't.

@stylistic

Specifies a feature name that will work with the stylistic() functional notation of font-variant-alternates. A stylistic feature value definition allows only one value: ident1: 2 is valid, but ident2: 2 4 isn't.

@styleset

Specifies a feature name that will work with the styleset() functional notation of font-variant-alternates. A styleset feature value definition allows an unlimited number of values: ident1: 2 4 12 1 maps to the OpenType values ss02, ss04, ss12, and ss01. Note that values higher than 99 are valid, but don't map to any OpenType values and are ignored.

@character-variant

Specifies a feature name that will work with the character-variant() functional notation of font-variant-alternates. A character-variant feature value definition allows either one or two values: ident1: 3 maps to cv03=1, and ident2: 2 4 maps to cv02=4, but ident2: 2 4 5 is invalid.

Formal syntax

@font-feature-values = 
@font-feature-values <family-name># { <declaration-list> }

Examples

Using @styleset in a @font-feature-values rule

/* At-rule for "nice-style" in Font One */
@font-feature-values Font One {
  @styleset {
    nice-style: 12;
  }
}

/* At-rule for "nice-style" in Font Two */
@font-feature-values Font Two {
  @styleset {
    nice-style: 4;
  }
}/* Apply the at-rules with a single declaration */
.nice-look {
  font-variant-alternates: styleset(nice-style);
}

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
@font-feature-values No No 34 No No 9.1 No No 34 No 9.3 No
annotation No No 34 No No 9.1 No No 34 No 9.3 No
character-variant No No 34 No No 9.1 No No 34 No 9.3 No
historical-forms No No 34 No No 9.1 No No 34 No 9.3 No
ornaments No No 34 No No 9.1 No No 34 No 9.3 No
styleset No No 34 No No 9.1 No No 34 No 9.3 No
stylistic No No 34 No No 9.1 No No 34 No 9.3 No
swash No No 34 No No 9.1 No No 34 No 9.3 No

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/@font-feature-values