Designboxes and different devices Format

Hello everyone

I’m currently finishing my new website (www.80salive-band.de). Most of the problems have been solved.

However, I have a design sizing and overhang problem.
This means: I use boxes (wide) and in the hero I always have an image graphic with small effect graphics on it.
My problem: There are adjustment problems with the various small devices (everything is ok up to the tablet). This means that the image is scaled down and a black overhang bar is created underneath, where some of my small effects are “placed”. I only see this on the left in the preview (+ later when publishing), but not on the workspace.
Can someone please help me what I can do about this.
I thank myself
Sylvia

That’s unclear unfortunately. You need to share screenshots that illustrate.