CUSTOM CSS: How would I make my entire site navigation bar BOLD on both mobile and desktop?

Looking to make all of these navigation links bold. 

Ive searched and searched to no avail of potential code that could work.

Can you share your website URL? Thanks!

4 hours ago, Ziggy said:

Can you share your website URL? Thanks!

jadefaceandbody.squarespace.com 

31 minutes ago, Ziggy said:

You should be able to find this in the Styles -> fonts menu, but if that doesn't work, try adding this Custom CSS:

.header .header-nav-wrapper a, .header .language-item a, .header-menu-nav-item {
    font-weight: 600 !important;
}

 

Worked like a charm!