Making secure HTTPS connection

Question

I got a task on my Security classes. I have to generate two RSA keys (A and B), treat B as CA and then:

For key A:

1. Generate a certificate request.
2. Receive certificate from CA.
3. Use this key and the coresponding certificate in my local HTTPS server (XAMPP)

For key B:

1. Become a CA.
2. Generate a certificate for A.
3. Import this CA certificate in browser.

The result should be a nice green padlock in Chrome's address bar. However, after all this steps I've only managed to get rid of "Entering untrusted site" warning, but the red padlock is still there. The information says:

localhost
Identity not veryfied.

The identity of the server to which you are connected cannot be fully validated. 

Any suggestions?

Answer 1

With the commentary I received, I was able to successfully resolve the issue.

However, it seems that Google Chrome has additional security rules when compared to Firefox. Using Mozilla's browser I haven't noticed any warnings concerning my certificate.