How to set the single post template with fullwidth cover?

Hi

Sorry that I’m a new user of this amazing theme, I want to set the post template like this https://independentpublisher.me/2013/discovering-the-real-nepal/ I know how to set the featured image as a fullwidth cover, but I don’t know how to make the post title cover on the fullwidth image, could you give me any tip?

Thanks!