Here is the code I use to add an individual ID to each page in a Joomla website. In index.php of your site’s template folder, add this code in place of the < body> tag:
<?php $menu = &JSite::getMenu(); $active = $menu->getActive(); ?> <body id="<?php print $active->alias; ?>">
Now, each page will have it’s own ID. For example, www.yourwebsite.com/about-us will have the ID “about-us.”
