Hello Carly,
Just as I thought, your developer made some modifications to the landmark header. He is using this code:
<?php
// =============================================================================
// VIEWS/INTEGRITY/_LANDMARK-HEADER.PHP
// -----------------------------------------------------------------------------
// Handles content output of large headers for key pages such as the blog or
// search results.
// =============================================================================
$disable_page_title = get_post_meta( get_the_ID(), '_x_entry_disable_page_title', true );
$disable_filters = get_post_meta( get_the_ID(), '_x_portfolio_disable_filtering', true );
?>
<?php if ( is_home() && x_get_option( 'x_integrity_blog_header_enable' ) == '1' ) : ?>
<span class="hero-section" style="background-image:url(<?= get_the_post_thumbnail_url(13, 'full') ?>);">
<div class="x-header-landmark x-container max width">
<h1 class="h-landmark"><span><?php echo x_get_option( 'x_integrity_blog_title' ); ?></span></h1>
<p class="p-landmark-sub"><span><?php echo x_get_option( 'x_integrity_blog_subtitle' ); ?></span></p>
</div>
</span>
<?php elseif ( is_search() ) : ?>
<span class="hero-section" style="background-image:url(<?= get_the_post_thumbnail_url(13, 'full') ?>);">
<div class="x-header-landmark x-container max width">
<h1 class="h-landmark"><span><?php _e( 'Search Results', '__x__' ); ?></span></h1>
<p class="p-landmark-sub"><span><?php _e( "Below you'll see everything we could locate for your search of ", '__x__' ); echo '<strong>“'; the_search_query(); echo '”</strong>'; ?></span></p>
</div>
</span>
<?php elseif ( is_category() || x_is_portfolio_category() ) : ?>
<?php
$meta = x_get_taxonomy_meta();
$title = ( $meta['archive-title'] != '' ) ? $meta['archive-title'] : __( 'Category Archive', '__x__' );
$subtitle = ( $meta['archive-subtitle'] != '' ) ? $meta['archive-subtitle'] : __( "Below you'll find a list of all posts that have been categorized as ", '__x__' ) . '<strong>“' . single_cat_title( '', false ) . '”</strong>';
?>
<span class="hero-section" style="background-image:url(<?= get_the_post_thumbnail_url(13, 'full') ?>);">
<div class="x-header-landmark x-container max width">
<h1 class="h-landmark"><span><?php echo $title ?></span></h1>
<p class="p-landmark-sub"><span><?php echo $subtitle ?></span></p>
</div>
</span>
<?php elseif ( x_is_product_category() ) : ?>
<?php
$meta = x_get_taxonomy_meta();
$title = ( $meta['archive-title'] != '' ) ? $meta['archive-title'] : __( 'Category Archive', '__x__' );
$subtitle = ( $meta['archive-subtitle'] != '' ) ? $meta['archive-subtitle'] : __( "Below you'll find a list of all items that have been categorized as ", '__x__' ) . '<strong>“' . single_cat_title( '', false ) . '”</strong>';
?>
<div class="x-header-landmark x-container max width">
<h1 class="h-landmark"><span><?php echo $title ?></span></h1>
<p class="p-landmark-sub"><span><?php echo $subtitle ?></span></p>
</div>
<?php elseif ( is_tag() || x_is_portfolio_tag() ) : ?>
<?php
$meta = x_get_taxonomy_meta();
$title = ( $meta['archive-title'] != '' ) ? $meta['archive-title'] : __( 'Tag Archive', '__x__' );
$subtitle = ( $meta['archive-subtitle'] != '' ) ? $meta['archive-subtitle'] : __( "Below you'll find a list of all posts that have been tagged as ", '__x__' ) . '<strong>“' . single_tag_title( '', false ) . '”</strong>';
?>
<div class="x-header-landmark x-container max width">
<h1 class="h-landmark"><span><?php echo $title; ?></span></h1>
<p class="p-landmark-sub"><span><?php echo $subtitle; ?></span></p>
</div>
<?php elseif ( x_is_product_tag() ) : ?>
<?php
$meta = x_get_taxonomy_meta();
$title = ( $meta['archive-title'] != '' ) ? $meta['archive-title'] : __( 'Tag Archive', '__x__' );
$subtitle = ( $meta['archive-subtitle'] != '' ) ? $meta['archive-subtitle'] : __( "Below you'll find a list of all items that have been tagged as ", '__x__' ) . '<strong>“' . single_tag_title( '', false ) . '”</strong>';
?>
<div class="x-header-landmark x-container max width">
<h1 class="h-landmark"><span><?php echo $title; ?></span></h1>
<p class="p-landmark-sub"><span><?php echo $subtitle; ?></span></p>
</div>
<?php elseif ( is_404() ) : ?>
<div class="x-header-landmark x-container max width">
<h1 class="h-landmark"><span><?php _e( 'Oops!', '__x__' ); ?></span></h1>
<p class="p-landmark-sub"><span><?php _e( "You blew up the Internet. ", '__x__' ); ?></span></p>
</div>
<?php elseif ( is_year() ) : ?>
<div class="x-header-landmark x-container max width">
<h1 class="h-landmark"><span><?php _e( 'Post Archive by Year', '__x__' ); ?></span></h1>
<p class="p-landmark-sub"><span><?php _e( "Below you'll find a list of all posts from ", '__x__' ); echo '<strong>'; echo get_the_date( 'Y' ); echo '</strong>'; ?></span></p>
</div>
<?php elseif ( is_month() ) : ?>
<div class="x-header-landmark x-container max width">
<h1 class="h-landmark"><span><?php _e( 'Post Archive by Month', '__x__' ); ?></span></h1>
<p class="p-landmark-sub"><span><?php _e( "Below you'll find a list of all posts from ", '__x__' ); echo '<strong>'; echo get_the_date( 'F, Y' ); echo '</strong>'; ?></span></p>
</div>
<?php elseif ( is_day() ) : ?>
<div class="x-header-landmark x-container max width">
<h1 class="h-landmark"><span><?php _e( 'Post Archive by Day', '__x__' ); ?></span></h1>
<p class="p-landmark-sub"><span><?php _e( "Below you'll find a list of all posts from ", '__x__' ); echo '<strong>'; echo get_the_date( 'F j, Y' ); echo '</strong>'; ?></span></p>
</div>
<?php elseif ( x_is_portfolio() ) : ?>
<?php if ( $disable_page_title != 'on' || $disable_filters != 'on' ) : ?>
<span class="hero-section" style="background-image:url(<?= get_the_post_thumbnail_url(581, 'full') ?>);">
<div class="x-header-landmark x-container max width">
<?php if ( $disable_page_title != 'on' ) : ?>
<h1 class="h-landmark"><span><?php the_title(); ?></span></h1>
<?php x_portfolio_filters(); ?>
<?php endif; ?>
</div>
</span>
<?php endif; ?>
<?php elseif ( x_is_shop() && x_get_option( 'x_integrity_shop_header_enable' ) == '1' ) : ?>
<div class="x-header-landmark x-container max width">
<h1 class="h-landmark"><span><?php echo x_get_option( 'x_integrity_shop_title' ); ?></span></h1>
<p class="p-landmark-sub"><span><?php echo x_get_option( 'x_integrity_shop_subtitle' ); ?></span></p>
</div>
<?php elseif ( x_is_buddypress() ) : ?>
<?php if ( x_buddypress_is_component_with_landmark_header() ) : ?>
<div class="x-header-landmark x-container max width">
<h1 class="h-landmark"><span><?php echo x_buddypress_get_the_title(); ?></span></h1>
<p class="p-landmark-sub"><span><?php echo x_buddypress_get_the_subtitle(); ?></span></p>
</div>
<?php endif; ?>
<?php endif; ?>
Please noticed that in the code there is <span class="hero-section" style="background-image:url(<?= get_the_post_thumbnail_url(13, 'full') ?>);">
which is the container for the background image. You can check this out in Appearance > Theme Editor and select the “_landmark-header.php” file in framework/legacy/cranium/headers/views/integrity/
.
The code allows the featured image of the page to be used as a background image in the landmark header. Please edit the Iota News and Events page which you assigned as your blog index so that the featured image may display as the background image.
Hope this helps.