CSS scroll-timeline-axis Property Reference

The CSS scroll-timeline-axis property is a experimental property in Scroll-driven Animations. Review its formal syntax, computed behavior, and practical declarations.

Updated 2026-08-12

scroll-timeline-axis overview

The CSS scroll-timeline-axis property is a experimental property in Scroll-driven Animations. 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

scroll-timeline-axis formal syntax

Field	Value
Formal syntax	[ block \| inline \| x \| y ]#
Initial value	block
Applies to	scrollContainers
Inherited	No
Percentages	no
Computed value	asSpecified
Animation type	notAnimatable
Media	interactive
Specification group	Scroll-driven Animations
Status	Experimental

Practical examples

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

scroll-timeline-axis live example

CSS

.reset-example {
  scroll-timeline-axis: initial;
}

.inherit-example {
  scroll-timeline-axis: inherit;
}

@supports (scroll-timeline-axis: initial) {
  .supported {
    scroll-timeline-axis: initial;
  }
}