CSS text-size-adjust Property Reference

The CSS text-size-adjust property is a experimental property in CSS Mobile Text Size Adjustment. Review its formal syntax, computed behavior, and practical declarations.

Updated 2026-08-12

text-size-adjust overview

The CSS text-size-adjust property is a experimental property in CSS Mobile Text Size Adjustment. Review its formal syntax, computed behavior, and practical declarations.

The computed value normally inherits from the parent element when no declaration wins the cascade.

Syntax and formal definition

text-size-adjust formal syntax

Field	Value
Formal syntax	none \| auto \| <percentage>
Initial value	autoForSmartphoneBrowsersSupportingInflation
Applies to	allElements
Inherited	Yes
Percentages	referToSizeOfFont
Computed value	asSpecified
Animation type	byComputedValueType
Media	visual
Specification group	CSS Mobile Text Size Adjustment
Status	Experimental

Practical examples

These declarations demonstrate valid ways to set text-size-adjust. The initial and inherit global keywords remain available even when a property-specific value is preferable.

text-size-adjust live example

CSS

.reset-example {
  text-size-adjust: initial;
}

.inherit-example {
  text-size-adjust: inherit;
}

@supports (text-size-adjust: initial) {
  .supported {
    text-size-adjust: initial;
  }
}