stop-propagation
Syntax
stop-propagation: true [every (time)] [after (time)];
This command stops event bubbling occurring in Active CSS for a particular event.
If you have external event listeners, they will still bubble. See the stop-immediate-propagation command if you want to stop bubbling completely for a particular element.
References:
https://developer.mozilla.org/en-US/docs/Web/API/Event/stopPropagation