my $html = '<h3>Heading 3.1</h3>
<span>Heading 3.1 content</span>
<h3>Heading 3.2</h3>
<span>Heading 3.2 content</span>';


my $dom = Mojo::DOM->new( $html );
for my $entry ( $dom->find('h3 + span')->each ){
	say $entry->all_text;
}