demo · v131

inset-area renamed to position-area

The CSS Anchor Positioning property inset-area was renamed to position-area. This demo now applies both spellings to the same anchor layout so you can see whether the old alias still resolves or has already been removed in this browser.

deprecated

inset-area

inset-area: top
anchor
.popover {
  position: absolute;
  position-anchor: --target;
  inset-area: top;
}
replacement

position-area

position-area: top
anchor
.popover {
  position: absolute;
  position-anchor: --target;
  position-area: top;
}

migration signal

position-area is the property to ship. If inset-area still parses, treat it as a migration-window alias and expect a DevTools deprecation warning when existing CSS uses it. If it no longer parses, the legacy panel shows the removed state and the property has no layout effect.

see also