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
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.
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.
@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%;
}