in source/assets/javascript/init.js [241:248]
function onAnimated(card, popup) {
card.addEventListener(transEndEventName, function transitionEnded() {
card.style['opacity'] = 0;
popup.style['visibility'] = 'visible';
popup.style['zIndex'] = 9999;
card.removeEventListener(transEndEventName, transitionEnded);
});
}