CSS stop-opacity Property Reference

The CSS stop-opacity property is a standard property in Scalable Vector Graphics. Review its formal syntax, computed behavior, and practical declarations.

Updated 2026-08-12

stop-opacity overview

The CSS stop-opacity property is a standard property in Scalable Vector Graphics. Review its formal syntax, computed behavior, and practical declarations.

The property is not inherited by default. Use an explicit global keyword when inheritance is intended.

Syntax and formal definition

stop-opacity formal syntax

Field	Value
Formal syntax	<'opacity'>
Initial value	black
Applies to	limitedSVGElementsStop
Inherited	No
Percentages	no
Computed value	asSpecified
Animation type	discrete
Media	visual
Specification group	Scalable Vector Graphics
Status	Standard

Practical examples

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

stop-opacity live example

CSS

.reset-example {
  stop-opacity: initial;
}

.inherit-example {
  stop-opacity: inherit;
}

@supports (stop-opacity: initial) {
  .supported {
    stop-opacity: initial;
  }
}