themes-wordpress/block-canvas/parts/header.html

<!-- wp:group {"layout":{"type":"constrained"}} -->
<div class="wp-block-group">
	<!-- wp:group {"align":"full","style":{"spacing":{"padding":{"bottom":"var:preset|spacing|60","top":"var:preset|spacing|60","right":"var:preset|spacing|40","left":"var:preset|spacing|40"}}},"layout":{"type":"flex","justifyContent":"space-between"}} -->
	<div class="wp-block-group alignfull" style="padding-top:var(--wp--preset--spacing--60);padding-right:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--60);padding-left:var(--wp--preset--spacing--40)">
		<!-- wp:group {"layout":{"type":"flex"}} -->
		<div class="wp-block-group">
			<!-- wp:site-logo {"width":64} /-->
	
			<!-- wp:group {"style":{"spacing":{"blockGap":"0px"}}} -->
			<div class="wp-block-group">
				<!-- wp:site-title /-->
				<!-- wp:site-tagline /-->
			</div>
			<!-- /wp:group -->
		</div>
		<!-- /wp:group -->
	
		<!-- wp:navigation {"layout":{"type":"flex","setCascadingProperties":true,"justifyContent":"right","orientation":"horizontal"},"style":{"spacing":{"margin":{"top":"0"}}}} /-->
	</div>
	<!-- /wp:group -->
</div>
<!-- /wp:group -->

<!-- wp:spacer {"height":"var(--wp--preset--spacing--80)"} -->
<div style="height:var(--wp--preset--spacing--80)" aria-hidden="true" class="wp-block-spacer"></div>
<!-- /wp:spacer -->