Hey mad thanks for your answer. But full-width isn't the problem here. I'm looking more for a solution like when you place a single image in the Hero section and set it to full-width it automatically is scaled to fullscreen. That's the image part that I need. In addition to that I want to place text in this fullscreen environment.
But when I add a section block, make that one full-width and place text blocks inside the background image is not fullscreen. See here: testing
With just a single image there's no problem making it fullscreen but it comes to text on it, that doesn't seem to work… Or do I miss some major steps?