Header text hover

Hi guys, im looking how can I do something similar, 

I want that when I hover over a text, it will turn black and the rest will be opaque.

Sorry for the newbie question and thanks for your help!

Not sure this is possible. What is your site url? We can check easier

2 hours ago, tuanphan said:

Not sure this is possible. What is your site url? We can check easier

www.elquipu.org

11 hours ago, tuanphan said:

Add to Design > Custom CSS

/* nav hover */
.header-nav-list:hover a {
    color: rgba(0,0,0,0.5) !important;
}
.header-nav-list:hover a:hover {
    color: black !important;
}

 

U are amazing!