[Resolved] Site Title in two lines using Navigation as Header

Hi there,

so the Site Title field in WP customizer won’t support HTML or line breaks.
You will need to use a PHP Snippet like this:

add_filter( 'generate_site_title_output', function( $output ) {
    $titleHTML = '<span class="line-one">Line one</span><span class="line-two">line two</span>';
    return sprintf(
        '<%1$s class="main-title" itemprop="headline">
	<a href="%2$s">%3$s</a>
	</%1$s>',
	( is_front_page() && is_home() ) ? 'h1' : 'p',
	esc_url( apply_filters( 'generate_site_title_href', home_url( '/' ) ) ),
	$titleHTML
    );
});

On this line : $titleHTML = '<span class="line-one">Line one</span><span class="line-two">line two</span>';
You need to change the text between the span tags for your title.

How to add PHP: https://docs.generatepress.com/article/adding-php/

Then add a little CSS to stack them:

.main-title span {
    display: block;
}