Integrating Mailchimp with Codyhouse responsive newsletter (https://codyhouse.co/gem/responsive-newsletter-form/) using http://designshack.net/articles/css/custom-mailchimp-email-signup-form/ as a base.
slicksys/codyhouseAJAXMailchimp
Integrating Codyhouse Newsletter Signup Form(https://codyhouse.co/gem/responsive-newsletter-form/) with Mailchimp
JavaScript