This doesn't remove the object from the DOM after the animation is over, which the example on the website does. You'll need to add something that removes the element after the transition is over which would be a bunch more code (the eventlistener for transitionend) :)
FYI you can set a "delay" in your profile of up to 10 minutes before your comments are shown, giving you more time to edit. May not have helped in this case but it's a cool feature.
