The document discusses AIDS.gov's transition to responsive design between 2006-2012. It summarizes key steps including launching a mobile site in 2010, adding responsive features to campaigns in 2011, and completing a fully responsive redesign in 2012. The reasons for responsive design included the rise of mobile access and need to serve diverse audiences. It provides tips on standards, testing devices, and making content work across screens. Drupal modules are mentioned as tools for building responsive sites in Drupal.