I'm new here, and to coding! I've been working hard (so, so hard...so hard) to create my website and with occasional help I've created a look and feel I like using some custom get_post_meta fields for my banner and background under header.php. 

    <div id="page" class="hfeed site">
	<?php do_action( 'before' ); ?>
    <?php
	$banner = get_post_meta($post->ID, 'banner', true);
	if (is_front_page() || $banner == '') { ?>
		<header id="masthead" class="site-header" role="banner">
	<?php
	} else {
	?>
		<header id="masthead" class="site-header" role="banner" style="background-image: url(<?=$banner?>); background-size:cover">
	<?php } ?> 

*But I'm really stumped on this problem*--none of them show up on my /blog page, which is a pretty important page; it just shows the site's general header content, same as the front page. I've researched enough to understand that this is because I have the blog page set as the posts page (with a static homepage), so it's not referencing the same header.php content as the pages are but rather the "homepage template" which is a template that indexes the posts, so my /blog page no longer has a page ID and isn't included under `<div id="page">` that is being referenced for my custom fields. So how do I get this post index template to reference the same banner code as the *pages* of my site? The solution on this page-- <https://wordpress.stackexchange.com/questions/92285/custom-fields-wont-display-on-my-blog-page> --seems right for my problem too, but I can't figure out how and where to use the  `get_option( 'page_for_posts' )` code in my own code!