Like Uwe I have no real idea, what your description has to do with your file, but maybe I guess what the issue is: The „eye“ icon floats away from the image, where it belongs to:
If this is your issue, look at this modified .muse file https://www.dropbox.com/s/ue5za64jcpym3oz/jeanetted95445980.muse?dl=0.
If you can’t figure out, how it is done, just ask!
That´s quite obvious: no content should be outside the canvas at no position of the scrubber:
No content should be inside the red area, outside these thin blue guides in a fixed width breakpoint.
Add a breakpoint like you did on master (960) and take care about these blue guides.
On Master the menu has to be hidden in this breakpoint and be replaced by another menu – most people out there use a mobile menu (hamburger).
Here you may see kind of a solution, but not designed as you want (I hope ) – just moved a bit out of the way – quick and dirty.
Changed the master, added a breakpoint (960), added another breakpoint (768), deleted a breakpoint (402).
Feel free to change what ever you need.