Hi Mohammad,
Custom Fonts (https://wordpress.org/plugins/custom-fonts/) seems to be one of the best solutions around.
However, please note that this plugin has not been tested or integrated with our product. So, we can’t guarantee that everything will work as expected, even though we believe there shouldn’t be any issues as it mostly adds features to the WP admin.
Finally, you will probably need to follow these guidelines from Kirki to integrate your new font to the existing list:
http://support.wedesignthemes.com/knowledge-base/how-to-add-custom-fonts-in-kirki/
Then, Kirki and Grimlock will do the rest of the job.
To add this code snippet to your site, we recommend that you use a the Code Snippets plugin (https://wordpress.org/plugins/code-snippets/). If you have never activated this plugin, please read the following post:
Please note that changing this is considered customization work. Unfortunately, this is a service that we do not provide.
We only share snippet only to solve issues with our theme. Any further request for CSS snippets will have to be part of a defect that needs to be fixed urgently. No snippets will be shared otherwise.
If you want to go further with the customization of your website, we advise that you hire a freelancer to do it for you.
If you’re on a tight budget, we recommend you to require the services from Envato Studio freelancers (https://studio.envato.com/explore/websites-programming). This web platform gives you access to developers who have already experience with theme customizations, and for very competitive prices.
Thank you for your understanding.
Best,
