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	<summary>It's an HTML5 accordion!</summary>
		<p>Use the <code>&lt;details&gt;</code> and <code>&lt;summary&gt;</code> tags. The other children of details (besides summary) will show/hide on click. No need to worry about grouping other elements together to make sure they show/hide.</p>
		<p><strong>Caveat:</strong> No good way of animating the accordion closing, unless you use a little JS. If you do, just make sure the CSS transition timing is the same as the JS timeout function. (300ms here)</p>
			<summary>It's ANOTHER accordion!</summary>
				<p>Lots of extra content can be hidden away in these nested accordions...</p>


                html, body { background-color: #ddd; }
details { max-width: 350px; margin: 50px auto;
	summary {
		list-style: none;
		display: block;
		background-color: #f4f4f4;
		padding: 5px 10px;
		position: relative;
		cursor: pointer;
		font-family: Rajdhani;
		color: #275d38;
		font-size: 24px;
		&::-webkit-details-marker { display: none; }
		&:before {
			display: flex;
			justify-content: center; align-items: center;
			content: '\f0fe';
			font-family: FontAwesome;
			font-size: 90%;
			position: absolute;
			top: 0; bottom: 0; right: 0;
			width: 30px;
			color: #fff;
			background-color: #285d39;
	> :not(summary) {
		padding: 10px;
		background-color: #fff;
		transform: scaleY(0);
		transform-origin: top;
		transition: transform 300ms;
	&[open] summary:before { content: '\f146'; }
	&[open] > :not(summary) { transform: scaleY(1); }


                function collapse(el) {
	//Set accessibility attributes
		$(this).attr('role', 'button');
		if ($(this).parent().is('[open]')) { $(this).attr('aria-expanded', 'true'); }
		else { $(this).attr('aria-expanded', 'false'); }
	//Event handler
	$('summary').on('click', function(e){
		if ($(this).parent().is('[open]')) {
			$(this).attr('aria-expanded', 'false');
			$(this).siblings(':not(summary)').css('transform', 'scaleY(0)');
			window.setTimeout(collapse, 300, $(this));
		} else {
			$(this).parent().attr('open', '');
			$(this).attr('aria-expanded', 'true');