.custom-accordion-block button.collapsed .accordion-arrow {
    transform: rotate(0deg);
    transition: transform 0.2s ease;
}

.custom-accordion-block button:not(.collapsed) .accordion-arrow {
	transform: rotate(180deg);
	transition: transform 0.2s ease;
}

.custom-accordion-block button {
	transition: background-color 0.15s ease-in-out;
}