functions.php

/** Genesis Previous/Next Post Post Navigation */

add_action( 'genesis_before_comments', 'eo_prev_next_post_nav' );
 
function eo_prev_next_post_nav() {
  
	if ( is_single() ) {
 
		echo '<div class="prev-next-navigation">';
		previous_post_link( '<div class="previous">Previous article: %link</div>', '%title' );
		next_post_link( '<div class="next">Next article: %link</div>', '%title' );
		echo '</div><!-- .prev-next-navigation -->';
 
	}
 
}

style.css

.prev-next-navigation {
  margin: 20px 0;
	clear: both;
	overflow: hidden;
}

.previous {
	float: left;
	width: 50%;
}

.next {
	float: right;
	text-align: right;
	width: 50%;
}