Customize CSS fade in and out

Hi there,

Your plugin is brilliant! I try to customize the fade in and out of the faq in CSS file but it doesn’t work.

https://www.bms.10min.ch/?page_id=360

When I click on an item, the plus sign should change to a minus sign. I’m pretty close: the background changes to green (with a minus sign) with a click but disappears in a very short time. How can I change and open item?

CSS extract:

h3.qa-faq-title span.arrow {
	background: #8E8B8B url("../img/toggle_plus.png") no-repeat scroll center center;
	width:22px;
	height:22px;
	float:left;
	margin-right:18px;
}

h3.qa-faq-title span.arrow:active {
	background: #a0ce4e url("../img/toggle_minus.png") no-repeat scroll center center;
	width:22px;
	height:22px;
	float:left;
	margin-right:18px;
}

Can anyone help?

thanks!!!

https://www.ads-software.com/extend/plugins/q-and-a/