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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

            
              mixin m-revealer(heading)
	.m-revealer&attributes(attributes)
		.m-revealer__trigger
			h2.m-revealer__heading= heading
			.m-revealer__icon
		.m-revealer__content
			if block
				block
			else
				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.

.o-accordion
	- var headings = ['One', 'Two', 'Three'];
	each heading in headings
		+m-revealer(heading)(class="o-accordion__section")
			.o-accordion__lvl2
				- var subheadings = ['A', 'B', 'C'];
				each subheading in subheadings
					+m-revealer(subheading)(class="o-accordion__section")

            
          
!

CSS

            
              /* 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;
}
            
          
!

JS

            
              class revealer {
	constructor(el){
		Object.assign(this, {
			$wrapper: el,
			isOpen: false,
		});
		this.$trigger = this.$wrapper.querySelector('.m-revealer__trigger');
		this.$trigger.onclick = ()=> this.toggle();
	}
	
	toggle(){
		if (this.isOpen) {
			this.close()
		} else {
			this.open();
		}
	}

	open(){
		this.$wrapper.classList.add(`-open`);
		this.isOpen = true;
	}

	close(){
		this.$wrapper.classList.remove(`-open`);
		this.isOpen = false;
	}
}

document.querySelectorAll('.m-revealer').forEach(el => {
	new revealer(el)
})
            
          
!
999px

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