linux - File Permission on /var/www/html

I changed the file permission.
Now I am not able to access the website.

nginx + php-fpm

previously,

chown -R user1:user1 /var/www/site.com

I read in internet, and then i changed the file permission.

groupadd web-content 
usermod -G web-content user1
usermod -G web-content apache

chown -R user1:web-content /var/www/site.com

find /var/www/site.com -type f -exec chmod 640 {} \;
find /var/www/site.com -type d -exec chmod 750 {} \;

After this, site is displaying 404 error.

From the above setting i added nginx to the web-content group.
Still not working.

usermod -G web-content nginx

Additionally, with this setting, I can't allow users to upload photos to uploads/ directory. But i want to allow users to upload photos

Answer

Everything is right. Just the change the file permission to

find /var/www/site.com -type f -exec chmod 645 {} \;
find /var/www/site.com -type d -exec chmod 755 {} \;