Diagnosing CSS scroll snap failures: check container, axis, children, and strictness

A developer article proposes treating CSS scroll snapping as a three-part contract to make failures easier to pinpoint. It introduces a small helper function that takes container and child style objects and returns ok, issues, and fixes. The checks run in order: whether the container opted in via scroll-snap-type, whether the declared axis matches the intended motion, whether children define scroll-snap-align targets, and whether strictness is set to proximity rather than mandatory. The author notes the helper is a heuristic that only inspects declarations and does not model momentum, pointer input, or full browser snapping physics.