Caddy strict security headers

security-headers.conf

header / {
	X-XSS-Protection "1; mode=block"
	X-Content-Type-Options "nosniff"
	X-Frame-Options "DENY"
	Referrer-Policy "no-referrer"
	Content-Security-Policy "default-src 'none'; object-src 'none'; base-uri 'self'; frame-ancestors 'none'; img-src https:; font-src 'self'; style-src 'self' 'unsafe-inline'; script-src 'none'; form-action 'self'; worker-src 'none'; frame-src https://youtube-nocookie.com;"
	Feature-Policy "accelerometer 'none'; ambient-light-sensor 'none'; autoplay 'none'; camera 'none'; encrypted-media 'none'; fullscreen 'self'; geolocation 'none'; gyroscope 'none'; magnetometer 'none'; microphone 'none'; midi 'none'; payment 'none'; picture-in-picture 'self'; speaker 'none'; usb 'none'; vr 'none';"
}