# Property Description

The font-size-adjust property sets the aspect ratio for the font. The aspect ratio is equal to the x-height of a font divided by the font size.

The purpose of this property is to maintain the readability of text when font fallback occurs. This is achieved by adjusting the font-size so that the x-height is the same regardless of the font used.

# Property Values

Value | Description
--- | ---
none | (default) Do not preserve the current specified font's x-height if the font is not available.
ratio | Sets the aspect ratio for the font

# Examples

This example sets the font aspect ratio for all `h1` elements.

    h1 {
      font-size-adjust:0.60;
    }

# Browser Support

Firefox | IE | Chrome | Opera | Safari

# Miscellaneous Information

Inherited: | Yes
Defined In: | CSS2 (removed from CSS2.1)