I am having some issues with compatibility with Mailchimp. Whenever a Mailchimp popup form is added to the site, when you initially go to the site the right margin disappears and the site is stretched, if you refresh the site (and the popup will no longer appear again) the site returns to normal. I have added the Mailchimp popup in numerous ways however the problem still exists and only resolves when it is removed. I am not sure whether the glitch is because of the site or Mailchimp.