details summary span.open {display:none;}
details[open] summary span.open {display:inline}
details[open] summary span.closed {display:none}

details summary {
	display: inline-block;
	position: relative;
}

details summary span {
	position: absolute;
	padding-left: 10px;
	top: 0;	
	white-space: nowrap;
}

details summary span::before {
	content: url('../assets/imgs/icons/arrow-down.png');	
	position: absolute;
	left: -10px;
}

details[open] summary span::before {
	content: url('../assets/imgs/icons/arrow-up.png');
}

.category-committees-task-forces-working-groups details {
	padding-left: 85px;
	margin-bottom: 1em;
}