Row Insert
A new row opens its own space, so the rows below slide down to make room instead of jumping, and fades in as it opens. 250 ms, through grid-template-rows: 0fr → 1fr — the height trick that needs no measuring.
Usage
Meant for
Examples
On a List View
A new row opens its own space, so the rows below slide down to make room instead of jumping. The height moves through grid-template-rows: 0fr → 1fr — no measuring, no max-height guess — and the row fades in as it opens. It plays once, when the row is rendered.
The class is wm wm-row-insert — the first half is the marker the trigger and reduced-motion rules hook into, the second is the effect.