Hi Tom
I delete content-page.php and content-single.php from child theme.
Add new function and CSS into child theme.
Then,
1. the title from single post
2. previous and next navigation links from post bottom
they all are gone.
Am I missing some steps?
Do I need to leave function from – http://generatepress.com/forums/topic/full-width-title-on-single-post-page/#post-107005 in child theme functions.php?