add_action( 'genesis_after_header', 'sk_blog_banner' );
/**
 * Full Width Banner Image below header
 *
 * @author Sridhar Katakam
 * @link   http://sridharkatakam.com/
 */
function sk_blog_banner() { ?>

	<div class="blog-banner">
		<img src="http://placehold.it/1600x222&amp;text=Banner" alt="Banner" />
	</div>

<?php }