Companies who employ multiple websites in a network often brand their sites through templates.
Templates allow a developer to utilize the basic design elements across the entire network of sites. These templates initially are identical, but can be modified slightly (tweaked) to create a unique yet uniform look and feel across the entire network of websites.
Templates are intended to be changed relatively simply.
D2 Designs can also design and provide custom templates for all the major C.M.S. platforms available, such as WordPress, Joomla, & Drupal.