MailChimp header bar covering banner/top nav. How can I push site down?

Hello, all;
Thanks for creating a great plugin. I have the MailChimp Forms header bar set up on my site but it’s covering my logo and nav buttons a little bit. Is there any CSS that I can use to automatically push the site down beyond the header height, and when someone closes the bar, allow it to automatically go back up to where it should be?

Thanks for all your help,

zC