Subscription dark background

Start with the linked preview and the supplied block markup, focusing on the heading's Domine font declaration and how custom fonts appear on the Blockpatterns site. Compare the rendered heading with the intended pattern; done means the custom heading font renders correctly in the preview.

Screenshot:

<!-- wp:cover {"url":"https://dotcompatterns.files.wordpress.com/2022/08/bookimg.jpg","id":6069,"dimRatio":0,"minHeight":60,"minHeightUnit":"vh","isDark":false,"align":"wide","style":{"spacing":{"padding":{"bottom":"40px","top":"40px"}}}} -->
<div class="wp-block-cover alignwide is-light" style="padding-top:40px;padding-bottom:40px;min-height:60vh"><span aria-hidden="true" class="wp-block-cover__background has-background-dim-0 has-background-dim"></span><img class="wp-block-cover__image-background wp-image-6069" alt="" src="https://dotcompatterns.files.wordpress.com/2022/08/bookimg.jpg" data-object-fit="cover"/><div class="wp-block-cover__inner-container"><!-- wp:group {"style":{"color":{"text":"#fffffa"}},"layout":{"inherit":true}} -->
<div class="wp-block-group has-text-color" style="color:#fffffa"><!-- wp:group {"style":{"spacing":{"padding":{"top":"30px","right":"30px","bottom":"30px","left":"30px"}}}} -->
<div class="wp-block-group" style="padding-top:30px;padding-right:30px;padding-bottom:30px;padding-left:30px"><!-- wp:group {"layout":{"type":"flex","flexWrap":"nowrap"}} -->
<div class="wp-block-group"><!-- wp:image {"id":6109,"width":100,"height":100,"sizeSlug":"large","linkDestination":"none"} -->
<figure class="wp-block-image size-large is-resized"><img src="https://dotcompatterns.files.wordpress.com/2022/08/girl-avatar.png?w=200" alt="" class="wp-image-6109" width="100" height="100"/></figure>
<!-- /wp:image --></div>
<!-- /wp:group -->

<!-- wp:heading {"style":{"typography":{"fontStyle":"normal","fontWeight":"600","fontSize":"4rem"}},"fontFamily":"domine"} -->
<h2 class="has-domine-font-family has-custom-font" style="font-size:4rem;font-style:normal;font-weight:600;font-family:domine">Of books &amp; literature</h2>
<!-- /wp:heading -->

<!-- wp:paragraph -->
<p>Weekly newsletter for the great reads and book suggestions from the New York times best sellers curator.</p>
<!-- /wp:paragraph -->

<!-- wp:jetpack/subscriptions {"buttonWidth":"","submitButtonText":"\u003cstrong\u003e Subscribe\u003c/strong\u003e","customButtonBackgroundColor":"#fffffa","customTextColor":"#3a2325","borderRadius":0,"borderWeight":0,"customBorderColor":"#fffffa","padding":15,"spacing":20,"className":"is-style-split"} -->
<div class="wp-block-jetpack-subscriptions wp-block-jetpack-subscriptions__supports-newline is-style-split">[jetpack_subscription_form show_subscribers_total="false" button_on_newline="false" submit_button_text="&lt;strong&gt; Subscribe&lt;/strong&gt;" custom_background_button_color="#fffffa" custom_text_button_color="#3a2325" custom_font_size="16px" custom_border_radius="0" custom_border_weight="1" custom_border_color="#fffffa" custom_padding="15" custom_spacing="20" submit_button_classes="no-border-radius" email_field_classes="no-border-radius" show_only_email_and_button="true" success_message="Success! An email was just sent to confirm your subscription. Please find the email now and click &#039;Confirm Follow&#039; to start subscribing."]</div>
<!-- /wp:jetpack/subscriptions --></div>
<!-- /wp:group --></div>
<!-- /wp:group --></div></div>
<!-- /wp:cover -->

Somehow the custom fonts for headings are not rendering in the Blockpatterns site. @alaczek do you have any info on this?

Preview:
https://dotcompatterns.wordpress.com/?p=6067&preview=true