How to remove the space between the page container and footer.

I want to remove the blank space between the footer and the page container such that all the footer linkscome  in the page container after the spotlight and the footer(containing elgg logo and links) comes just under the page container.  What changes do I need to make in the CSS file to achieve this.  I am working on an existing code so I can't add My Footer plugin I have to get this done in the theme plugin I am developing.