CSS position-try-fallbacks Property Reference

The CSS position-try-fallbacks property is a experimental property in CSS Anchor Positioning. Review its formal syntax, computed behavior, and practical declarations.

Updated 2026-08-12

position-try-fallbacks overview

The CSS position-try-fallbacks property is a experimental property in CSS Anchor Positioning. 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

position-try-fallbacks formal syntax

Field	Value
Formal syntax	none \| [ [<dashed-ident> \|\| <try-tactic>] \| <'position-area'> ]#
Initial value	none
Applies to	absolutelyPositionedElements
Inherited	No
Percentages	no
Computed value	asSpecified
Animation type	discrete
Media	visual
Specification group	CSS Anchor Positioning
Status	Experimental

Practical examples

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

position-try-fallbacks live example

CSS

.reset-example {
  position-try-fallbacks: initial;
}

.inherit-example {
  position-try-fallbacks: inherit;
}

@supports (position-try-fallbacks: initial) {
  .supported {
    position-try-fallbacks: initial;
  }
}