location / { set $frame_options ''; if ($http_referer !~ '^https?:\/\/([^\/]+\.)?(studionish\.com|webvisor\.com.tr)\/'){ set $frame_options 'SAMEORIGIN'; } add_header X-Frame-Options $frame_options; ... }^https?:\/\/([^\/]+\.)?(studionish\.com\.tr|webvisor\.com)\/