Hi There,
First of all, we have provided you CSS code two times and you need to use both CSS code and we have tested the code before provided you. That means, the codes are working code and it’s tested by our developer.
By the way, if you get our provided codes are not working, then you need to hire someone else to customize the theme based on your requirements. Also, you could contact with our sales team for premium customization service.
Moreover, you could learn more the item support includes & not includes from here https://themeforest.net/item/hostwhmcs-responsive-hosting-and-whmcs-wordpress-theme/19204695/support
Best Regards,
ThemeLooks Support Team