Use ssi on; inside your server block:
Does the server process the SSI directives quickly, or is there a lag?
<!DOCTYPE html> <html> <head><title>SSI Example</title></head> <body> <h1>Main content</h1> <!--#include virtual="footer.html" --> </body> </html>
In the context of writing and viewing essays online, an link refers to a webpage that uses Server Side Includes (SSI) . This is a technology that allows a web server to add dynamic content—like a common header, footer, or navigation menu—into an HTML page before it is sent to your browser. How to View an .shtml Essay Link