Full width images out of content block, and into a single post

Hi friends,

I have a doubt about to include various featured images into a post, I mean, I want to include 7 full width image in order to break the post’s block, out of the content block because actually I have only one full width image that it’s the featured image on top of the post.

I understand i can set 100% width images into the post, but when i try to set a full screen image, it’s shown only into the content block (entry-content class, 830px – width) so really that isn’t a full with images into the screen, rather 100% images into the entry -content block.

Can you guide me to define a full screen image into a single post?, i don’t want to include a plugin, I would like do it manually, but there is no other solution I can do it with plugins.

Cheers,