We have made some adjustments with how site intros are displayed. Now you can add your own custom page html complete with body and meta information, in turn this will cause the intro page to ignore the Style Sheet for your website. This way if you wanted to display a different background in your HTML code as an example, you can do this much easier now. Thus Allowing a greater level of intro customization.
If you are using the new management bar, when saving your intro you will be redirected to your intro page to get a preview of how it would look to new users visiting your website.