The CSS Font-Size-Adjust Property

Font size adjustment in CSS

The CSS font-size-adjust property lets you control the sizing for lowercase letters:

div {
    font-size: 30px; 
    font-size-adjust: 0.6;
}

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Using font-size-adjust in CSS

After specifying the font-size, you can define the size of lowercase letters in relation to it:

font-size-adjust: value;

The default value for CSS font-size-adjust is none, which means the browser uses the default size of lowercase letters in the chosen font.

To define a custom size, enter a unitless number for the value of font-size to be multiplied by. See a few examples of font size adjustment in the table below.

Browser support

Chrome

43+

Edge

-

Firefox

40+

IE

-

Opera

30+

Safari

-

Mobile browser support

Chrome

-

Firefox

4+

Opera

-

Safari

-