Squarespace 7.1 Font Weight Issue

Hi, I'm redesigning a site and cannot figure out how to override and change the font weights. I'm wanting to use Oswald in either a 500 or 600 for the navigation links and also button links text.. the system only shows 300, 400, 700.. 

I've tried adding in some code injections found, but have yet to get anything to work. 

https://www.holdingspacetherapyllc.com/

Thank you in advance!! 

11 hours ago, creedon said:

It appears that Oswald supports the 500 and 600 font weight. Why SS doesn't present those, I don't know. Perhaps the differences are so subtle that they don't offer them.

Add the following to Website > Website Tools > Custom CSS.

/* navigation font weight */

.header-nav-list, /* desktop */
.header-menu-nav-wrapper /* mobile */

  {
  
    --site-navigation-font-font-weight : 600;
    
    }

Let us know how it goes.

@creedon thank you so much!!! It worked!