ascent-override

The ascent-override CSS descriptor for the @font-face at-rule defines the ascent metric for the font. The ascent metric is the height above the baseline that CSS uses to lay out line boxes in an inline formatting context.

Syntax

css

ascent-override: normal;
ascent-override: 90%;

Values

normal

The default value. When used the metric value is obtained from the font file.

<percentage>

A <percentage> value.

Formal definition

Related at-rule@font-face
Initial valuenormal
Percentagesas specified
Computed valueas specified

Formal syntax

ascent-override = 
  [ normal | <percentage [0,∞]> ]{1,2}

Examples

Overriding metrics of a fallback font

The ascent-override property can help when overriding the metrics of a fallback font to better match those of a primary web font.

css

@font-face {
  font-family: web-font;
  src: url("https://example.com/font.woff");
}

@font-face {
  font-family: local-font;
  src: local(Local Font);
  ascent-override: 125%;
}

Specifications

Specification
CSS Fonts Module Level 4
# font-metrics-override-desc

Browser compatibility

BCD tables only load in the browser

See also