Сергей delphinpro

$date = new DateTimeImmutable();
$isInAcademicYear = (
    $date <= new DateTimeImmutable('31 May') ||
    $date >= new DateTimeImmutable('01 September')
);
var_dump($isInAcademicYear); // true

/**
 * @property int|null $id
 */

.main {
height: calc(100vh - 60px);
}

если в Mysql какие-то строки смогут загрузиться, а какие-то - нет,

const sliders = document.querySelectorAll("[data-slider]");

sliders.forEach(slider => {
	const track = slider.querySelector("[data-slider-track]");
	const prev = slider.querySelector("[data-slider-prev]");
	const next = slider.querySelector("[data-slider-next]");

	if (track) {

		prev.addEventListener("click", () => {
			next.disabled = false;
			// next.removeAttribute("disabled");

			track.scrollTo({
				left: track.scrollLeft - track.firstElementChild.offsetWidth,
				behavior: "smooth"
			});
		});

		next.addEventListener("click", () => {
			prev.disabled = false;
			// prev.removeAttribute("disabled");

			track.scrollTo({
				left: track.scrollLeft + track.firstElementChild.offsetWidth,
				behavior: "smooth"
			});
		});

		track.addEventListener("scroll", () => {
			const trackScrollWidth = track.scrollWidth;
			const trackOuterWidth = track.clientWidth;

			prev.disabled = false;
			next.disabled = false;
			// prev.removeAttribute("disabled");
			// next.removeAttribute("disabled");

			if (track.scrollLeft <= 0) prev.disabled = true; //prev.setAttribute("disabled", "");
			if (track.scrollLeft === trackScrollWidth - trackOuterWidth) next.disabled = true; //next.setAttribute("disabled", "");
		});

	};
});