Add this to .htaccess on the root directory of your domain. You may add other file extenstions as per your need.
<FilesMatch ".(eot|otf|ttf|woff|woff2|css|jpg|jpeg)">
Header always set Access-Control-Allow-Origin "*"
</FilesMatch>
Add this to your vhosts file within server {} directive and restart nginx. You may add other file extensions too as per your needs.
location ~* \.(eot|otf|ttf|woff|woff2|css|jpg|jpeg)$ {
add_header Access-Control-Allow-Origin *;
}
You may as well check your nginx file if it contains any errors using following command
rafled@Ubuntu:~$ sudo nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
Then, restart nginx
rafled@Ubuntu:~$ sudo systemctl restart nginx