//* Remove the site description
remove_action( 'genesis_site_description', 'genesis_seo_site_description' );

//* Add the site description conditionally
add_action( 'genesis_before_content', 'maybe_site_description' );
function maybe_site_description() {

	if ( is_home() ) {
		genesis_seo_site_description();
	}

}

// Change the font size and center the site description
.site-description {
	font-size: 50px;
	font-weight: 300;
	line-height: 1.5;
	text-align: center;
}

//* Register a widget area
genesis_register_sidebar( array(
	'id'            => 'wonder-widget',
	'name'          => __( 'Wonder Widget', 'sample' ),
	'description'   => __( 'This is a widget area', 'sample' ),
) );

//* Hook widget area before content
add_action( 'genesis_before_content', 'add_my_widget' );
	function add_my_widget() {
	if ( is_home() ) {
		genesis_widget_area( 'wonder-widget', array(
			'before' => '<div class="wonder-widget widget-area">',
			'after'  => '</div>',
		) );
	}
}