const images = document.querySelectorAll('.onscroll_slide_down');observer = new IntersectionObserver(entries => {entries.forEach(entry => {if (entry.intersectionRatio > 0) {entry.target.style.animation = `slide_down 2s ${entry.target.dataset.delay} forwards ease-out`;} else{entry.target.style.animation = 'none';}});});images.forEach(image => {observer.observe(image);});