I have recently installed word press blog in my website.

I tried to do some changes in settings which lead to problem in my blog

Here is the Blog URL

http://www.karmadirectorysubmission.com/blog/


These are
1) Blog Design changed completely
2) Blog Login Page

http://www.karmadirectorysubmission.com/wp-login.php doesn't open up.

Kindly help me in solving this problem.

Try:
http://www.karmadirectorysubmission....g/wp-login.php

I'm assuming you do want your css styles to show on the site.

So you need to check which folder the blog address is pointing to. Are you using Wordpress itself or an API?

I think there's a wordpress file that was not completely uploaded on the folder. It is also posible that wp-admin.php was not uploaded on the folder.