function Details({ onexpand }, children) {
	if (onexpand) onexpand(false);
	return (
		<div onexpand={onexpand} attr-is="details">
			{children}
		</div>
	);
}
A function component that returns a div element with the "details" attribute.

@param {Object} props - The properties object for the component.
@param {Function} props.onexpand - Callback function to be executed when the div expands.
@param {Array} children - An array of child elements to be inserted into the div.

@returns {HTMLDivElement} A div element with the "details" attribute, and any child elements.