How to Add the Parent Category as a Class in body_class()
<?php $class=''; /* Make it void by default */ if ( is_single() || is_category() ) { /* Only do this if we're on a single post or category page */ $category = get_the_category(); $parent = $category[0]->category_parent; $class = get_cat_name($parent); /* assign the permalink name for the parent category to the object $class */ }?> <body <?php body_class($class); /* This will add our custom class, which is void if we aren't on a single post or category page */ ?>>