security policy

Hello everyone,

I have recently performed a scan on my application and found the following:

“The content security policy provides a
valuable safety net that protects your website from malicious site scripting
malicious cross-site scripting (XSS) attacks. A well-configured policy will prevent an attacker from attempting to
attacker from trying to insert your code or references to other malicious content into your site.
other malicious content.
Without a content security policy in place, it is easy for
website developers to make mistakes that allow an attacker to
allow an attacker to inject content that will change the way the website
way the website behaves.”

And they recommend :
Enable PSC headers through your web server configuration.

Does anyone know how I can perform this header definition to my Wix hosted website?

Thank you very much