Remove underline from main manu

Hi @rafafallo

I would recommend taking a look at the following support thread, which achieves something similar.

https://www.ads-software.com/support/topic/highlighting-the-active-menu-option/

Thank you, it played with the rules

.primary-menu li.menu-item a {
	 opacity: 1;
}

.primary-menu li.current-menu-item a:after {
   opacity: 0
}

Basically, they remove the underline from the chosen item. But I am looking after the opposite effect (only the chosen item to be underlined). However, if I exchange the opacity values, all items disappear!

I have tried text-decoration, and outline, with no luck.