anchors-valid and anchors-visible

The position-visibility: anchors-valid and position-visibility: anchors-visible CSS declarations are aliases for anchor-valid and anchor-visible.

Baseline Status: This feature is currently Limited and is missing in at least one major browser engine.

Desktop Browser Engine Support

Google Chrome

—

Unsupported

Mozilla Firefox

147

Supported

Apple Safari

26.2

Supported

Microsoft Edge

—

Unsupported

Mobile Browser Engine Support

Chrome Android

—

Firefox Android

147

Safari iOS

26.2

Specifications and References

Specification ↗ Feature XML ↗

MDN Browser Compat Data Keys:

css.properties.position-visibility.anchors-valid ↗ css.properties.position-visibility.anchors-visible ↗