Add listing button in main menu

Hi

I was trying to add the add listing button to the main menu but to appear at the far right. So here’s what I did. I added a custom link to the main menu, then targeted that custom link with css and everything works fine. There’s one problem only. The home menu item is a custom link too, and targeting the add listing menu item would also affect the home menu item. How would you do this so only the add listing menu item is targeted?