Simple Datalist Accordion

datalist-accordion.html

<script>$('.folded dt').click( function() { $(this).toggleClass('unfolded').next('dd').toggleClass('unfolded'); });</script>

<style>

	.folded dt,
	.folded dd {
		display: block;
	}
	
	.folded dt {
		font-size: 1.2rem;
		padding: .5rem 0;
		font-weight: 300;
	}
	
	.folded dt:nth-of-type(odd)
	.folded dt:nth-of-type(odd) + dd {
		/* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#ffffff+0,ffffff+50,ffffff+100&amp;0+0,1+50,0+100 */
		background: -moz-linear-gradient(left,  rgba(255,255,255,0) 0%, rgba(255,255,255,1) 50%, rgba(255,255,255,0) 100%); /* FF3.6+ */
		background: -webkit-gradient(linear, left top, right top, color-stop(0%,rgba(255,255,255,0)), color-stop(50%,rgba(255,255,255,1)), color-stop(100%,rgba(255,255,255,0))); /* Chrome,Safari4+ */
		background: -webkit-linear-gradient(left,  rgba(255,255,255,0) 0%,rgba(255,255,255,1) 50%,rgba(255,255,255,0) 100%); /* Chrome10+,Safari5.1+ */
		background: -o-linear-gradient(left,  rgba(255,255,255,0) 0%,rgba(255,255,255,1) 50%,rgba(255,255,255,0) 100%); /* Opera 11.10+ */
		background: -ms-linear-gradient(left,  rgba(255,255,255,0) 0%,rgba(255,255,255,1) 50%,rgba(255,255,255,0) 100%); /* IE10+ */
		background: linear-gradient(to right,  rgba(255,255,255,0) 0%,rgba(255,255,255,1) 50%,rgba(255,255,255,0) 100%); /* W3C */
		filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00ffffff', endColorstr='#00ffffff',GradientType=1 ); /* IE6-9 */		

	}
	
	.folded dt:not(.unfolded):nth-of-type(even),
	.folded dt:not(.unfolded):nth-of-type(even) + dd {
		/* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#ffffff+0,eaeaea+50,ffffff+100&amp;0+0,1+50,0+100 */
		background: -moz-linear-gradient(left,  rgba(255,255,255,0) 0%, rgba(234,234,234,1) 50%, rgba(255,255,255,0) 100%); /* FF3.6+ */
		background: -webkit-gradient(linear, left top, right top, color-stop(0%,rgba(255,255,255,0)), color-stop(50%,rgba(234,234,234,1)), color-stop(100%,rgba(255,255,255,0))); /* Chrome,Safari4+ */
		background: -webkit-linear-gradient(left,  rgba(255,255,255,0) 0%,rgba(234,234,234,1) 50%,rgba(255,255,255,0) 100%); /* Chrome10+,Safari5.1+ */
		background: -o-linear-gradient(left,  rgba(255,255,255,0) 0%,rgba(234,234,234,1) 50%,rgba(255,255,255,0) 100%); /* Opera 11.10+ */
		background: -ms-linear-gradient(left,  rgba(255,255,255,0) 0%,rgba(234,234,234,1) 50%,rgba(255,255,255,0) 100%); /* IE10+ */
		background: linear-gradient(to right,  rgba(255,255,255,0) 0%,rgba(234,234,234,1) 50%,rgba(255,255,255,0) 100%); /* W3C */
		filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00ffffff', endColorstr='#00ffffff',GradientType=1 ); /* IE6-9 */

		}
		
	.folded dt {
		border-top: 1px transparent solid;
	}
	
	.folded dd {
		display: none;
	}
	
	.folded dt.unfolded,
	.folded dd.unfolded {
		color: black;
	}
	
	.folded dt.unfolded {
		border-top: 1px $gray solid;
		padding-top: 1rem;
		padding-bottom: .25rem;
	}
	
	.folded dt.unfolded + dd {
		border-bottom: 1px rgba(0, 0, 0, 0.1) solid;
	}
	
	.folded dd {
		opacity: .5;
		transition: opacity .5s ease-in;
	}
	
	.folded dd.unfolded {
		display: block;
		padding-bottom: 1rem;
		opacity: 1;
	}
	
	.folded dt:hover {
		cursor: pointer;
		color: black;
	}

</style>

<dl>
    <dt>List Item Title and Toggle</dt>
    <dd>Content hidden until toggled</ddi>
</dl>