Subcategories Icons

I added font awesome icons to navigation menu in Squarespace 7.1. I was tagreting 6 main categories with this code

 .header-nav-item:nth-child 1..2…3..4..5..(5)..6 a::before { and it works perfectly.

Question is what would be the code to target subcategories in each of the main categories? Thanks!

Can you share link to page where you have subcategories?

https://face-plus-form.squarespace.com/en/vibration-therapy 

Just as an example, in this case Vibrational Therapy , I would change icon to f83e 🙃

4 hours ago, Rosenthal said:

https://face-plus-form.squarespace.com/en/vibration-therapy 

Just as an example, in this case Vibrational Therapy , I would change icon to f83e 🙃

Where is "subcategory"? Can you take screenshot?

replace with page url

.header-nav-folder-item [href="/en/vibration-therapy"]:before {
    content: "\f83e" !important;
}

Many thanks!!! 🤗❤️