themes-wordpress/lynx/parts/header.html

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<div class="wp-block-group alignfull" style="padding-top:var(--wp--custom--spacing--outer)"><!-- wp:navigation {"overlayMenu":"always","overlayBackgroundColor":"background","overlayTextColor":"foreground","layout":{"type":"flex","setCascadingProperties":true,"justifyContent":"right"},"style":{"typography":{"fontStyle":"normal"}},"fontSize":"x-large"} /--></div>
<!-- /wp:group -->