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              mixin m-revealer(heading)
			h2.m-revealer__heading= heading
			if block
				p Lorem ipsum dolor sit amet, consectetur adipiscing elit. Quippe: habes enim a rhetoribus; Istam voluptatem perpetuam quis potest praestare sapienti? Non enim solum Torquatus dixit quid sentiret, sed etiam cur. Expressa vero in iis aetatibus, quae iam confirmatae sunt. Tamen a proposito, inquam, aberramus. Sed tu istuc dixti bene Latine, parum plane. Duo Reges: constructio interrete. Bonum liberi: misera orbitas. Ut aliquid scire se gaudeant? Quae cum magnifice primo dici viderentur, considerata minus probabantur.

	- var headings = ['One', 'Two', 'Three'];
	each heading in headings

              /* o-accordion component file */
.o-accordion {
	border-top: 1px solid #000;
	max-width: 600px;
	margin: 0 auto;

	&__section {
		border: 1px solid #000;
		border-top: 0;

/* m-revealer component file */
.m-revealer {
	&__trigger {
		display: grid;
		grid-template-columns: 1fr 50px;

		&:hover {
			cursor: pointer;
			background: lightgrey;

		.-open & {
			background: #000;
			color: #fff;

			&:hover {
				background: #1D1F20;

	&__heading {
		margin: 0;
		padding: 10px 20px;
	&__icon {
		position: relative;
		display: flex;
		justify-content: center;
		align-items: center;

		&::before {
			content: '';
			display: block;
			height: 0;
			width: 0;
			border-top: 10px solid #000;
			border-left: 5px solid transparent;
			border-right: 5px solid transparent;

			.-open & {
				transform: rotate(180deg);
				border-top-color: #fff;	
	&__content {
		border-top: 1px solid #000;
		padding: 10px 20px;
		display: none;
		.-open & {
			display: block;

/* resets file */
*, *::before, *::after {
	box-sizing: border-box;
              class revealer {
		Object.assign(this, {
			$wrapper: el,
			isOpen: false,
		this.$trigger = this.$wrapper.querySelector('.m-revealer__trigger');
		this.$trigger.onclick = ()=> this.toggle();
		if (this.isOpen) {
		} else {

		this.isOpen = true;

		this.isOpen = false;

document.querySelectorAll('.m-revealer').forEach(el => {
	new revealer(el);
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