Page not rendering behind nginx proxy

Install/Maintain/Configure
1

In my nginx config, I have

    location /gitea/ {
        proxy_pass http://localhost:3000/;
}

However, when I visit http://mydomain/gitea/, the website does not render properly as seen below. However, it still works when I access gitea via port 3000.

image

2

I didn’t read the last part of the section.