I need to make changes in login.aspx and login.css to make it responsive.
What is the best aproach for doing that?
I can find the files i need to change in the cms.zip file under \modules\_protected\CMS in our project.
Do I have to unzip the files and make the changes needed and then zip it again?
Thanks in advance for the help, Kristian.
Since the .zip-file is updated every time you update EPiServer, that's not a good solution.
You should create your own login-page instead and set that as the default login page in web.config.
I agree with Erik. Make your own login page using the standard .NET Membership Provider APIs.