Widget title line position

I changed the (green) line under the widget title with success:
#secondary .widget-title::after{width:80px;}

But how do I change the position of the line? The widget title is centered and I want to have the line centered, too.

I only found the css-part, but that doesn’t help for me:

#secondary .widget-title::after{
		background-color: #8bc34a;
	    content: "";
	    position: absolute;
	    width: 50px;
	    display: block;
	    height: 4px;    
	    bottom: -15px;

Best regards
Daniel

• This topic was modified 5 years, 11 months ago by d11b.