Hi @rafafallo
I would recommend taking a look at the following support thread, which achieves something similar.
https://ww.wp.xz.cn/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.