font-size#

#Introduction

font-size CSS property sets the size of the font. Changing the font size also updates the sizes of the font size-relative <length> units, such as em, ex, and so forth.

#Examples

css-apisrc/font-size/App.tsx

Preview

#Syntax

/* <length> */
font-size: 12px;
font-size: 0.8em;

/* <percentage> */
font-size: 80%;

#Values

• <length>
  Positive <length> value. For most font-relative units (such as em and ex), the font size is relative to the parent element's font size.

• <percentage>
  A positive <percentage> value, relative to the parent element's font size.

#Formal definition

#Formal syntax

font-size = <length> | <percentage>

#Difference with Web

• Only support <length> and <percentage>

• Default font-size is 14px not medium.

#Compatibility