Expand Main Navigation width in header?

Site URL: https://www.vitliving.com/

Is it possible to expand the width of the site Main Navigation in the Header? I'm anticipating adding more pages to the navigation and don't want it to start appearing too crowded.

https://www.vitliving.com/

Add to Home > Design > Custom CSS

.header-layout-branding-center-nav-center .header-title-nav-wrapper {
    flex: 0 0 60%;
}