How to send "Access-Control-Allow-Origin" header?

Question

CORS

There is a client and a server (all under my control). The client uses JavaScript to download information from the server. The server gives the client an HTML page that has link tags that connect styles to the page, and fonts are connected in these styles. Style files and fonts are located on the server. Styles are connected by an absolute reference. But they don't connect :D, that's because Access to Font has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
This already happened when the page was rendered: then everything was decided by sending the header from the php script. But what about now?

Answer 1

If you have Apache HTTPd, then in .htaccess arrange via Header , if nginx, then add_header in the appropriate section.