// Register Theme Features function custom_theme_features() { // Add theme support for Featured Images add_theme_support( 'post-thumbnails', array( '' ) ); // Add theme support for HTML5 Semantic Markup add_theme_support( 'html5', array( 'search-form', 'comment-form', 'comment-list' ) ); } add_action( 'after_setup_theme', 'custom_theme_features' );