By default you can’t add HTML to a Widget Title in WordPress, such as a break tag <br>, you can get around this by adding a filter to allow shortcode to the title area….
In functions.php file in your child theme add:
add_filter('widget_title', 'do_shortcode');
add_shortcode('br', 'ng_shortcode_breaktag');
function ng_shortcode_break( $attr ){
	return '<br />';
}
Now in your Widget Title area just use [br] where you want the HTML break.
You can also add a span element using the same technique, then target that in CSS to do what you got to do.
add_filter('widget_title', 'do_shortcode');
add_shortcode('span', 'ng_shortcode_spantag');
function ng_shortcode_spantag( $attr, $content ){
return '<span>'. $content . '</span>';
}
Now in your Widget Title area just use [span]part of the title[/span] where you want the span tag to wrap around.









