How to delete a paragraph as quickly as possible

I want to delete the following codes in my config file:

server {
    listen 80;
    server_name xxx;
    location / {
        try_files xx;
    }
}

I know I can use 7dd, but this is not handy enough- if the section is too long, counting the rows would be inconvenient.

Is there a better way to do this?

Sometimes, I have to delete a whole function, any ideas for that?