Hello. Thank you for contacting the Toolset support.
I need to check first what theme you are using and is it possible to make a full-width layout for your custom post type single page.
I need admin access details to check this further.
*** Please make a FULL BACKUP of your database and website.***
I would also eventually need to request temporary access (WP-Admin and FTP) to your site. Preferably to a test site where the problem has been replicated if possible in order to be of better help and check if some configurations might need to be changed.
I have set the next reply to private which means only you and I have access to it.
So, this is coming from the theme, Toolset to not add CSS class like .uk-container, I suggest you contact theme author and check with them how you can modify your single post template to display the top section with image to full-width.
That is another issue. As per our support policy, we entertain only one question per ticket. This will help other users searching on the forum as well as help us to write correct problem resolution summery.
I'll split the ticket with your newe question. You are welcome to close this ticket.