How to overlay entry title on featured image in single Posts. https://sridharkatakam.com/overlay-entry-title-featured-image-single-posts/

functions.php

// Register a custom image size for hero images on single Posts
add_image_size( 'post-image', 1600, 400, true );

add_action( 'genesis_after_header', 'sk_hero_image' );
function sk_hero_image() {
	// if we are not on a single Post, abort.
	if ( !is_singular( 'post' ) ) {
		return;
	}

	// set $image to URL of featured image. If featured image is not present, set it to post-image.jpg in child theme's images directory.
	if ( has_post_thumbnail() ) {
		$image = genesis_get_image( 'format=url&size=post-image' );
	} else {
		$image = get_stylesheet_directory_uri() . '/images/post-image.jpg';
	} ?>

	<div class="post-hero" style="background-image: url('<?php echo $image; ?>')">
		<div class="wrap">
			<?php genesis_do_post_title(); ?>
		</div>
	</div>

	<?php
	// Remove entry title
	remove_action( 'genesis_entry_header', 'genesis_do_post_title' );
}

style.css

.post-hero {
	padding: 200px 0;
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center;
}

.post-hero .entry-title {
	margin-bottom: 0;
	color: #fff;
	background-color: rgba(0,0,0,.75);
	padding: 15px;
	text-transform: uppercase;
	max-width: 50%;
}

@media only screen and (max-width: 1023px) {

	.post-hero .entry-title {
		max-width: none;
	}

}