Since the tile of the post is simply linking to itself I don’t see a need for the link and would prefer to get rid of it so that
The content of single posts is controlled with content.php. So, you’d simply copy the file to your Child theme and make any changes you like there. In your case, you’d just remove the anchor tag from around the title.
http://dev.themeblvd.com/tutorial/editable-content-files/
Then, from there you’ll have your CSS changes.