server {
    listen       80;
    server_name  website1.example.com website2.example.com website3.example.com;
    root         /www;
    index        index.html;

    # redirect requests for .html URLs to their extensionless form
    if ($request_uri ~ ^/index\.html(\?.*)?$) {
        return 301 /$1;
    }
    if ($request_uri ~ ^/(.+)\.html(\?.*)?$) {
        return 301 /$1$2;
    }

    location / {
        try_files $uri $uri.html $uri/ =404;
    }

    error_page 404 /404.html;
    location = /404.html {
        internal;
    }

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    location ~ /\.ht {
        deny  all;
    }
}