Yes! The Footer Text section of the Splash Intro page allows you to add custom code so that you can have more control over the layout of the page. To access this, click on your Portfolio icon at the top of your control panel and click on Splash Intro. From there, click on the Page Settings tab and scroll down to the Footer Text section. Enter your custom code here and then click on save changes.
When you're ready for your custom coding to be applied to your live site, make sure to go to publish and click on publish now.