Can you please post a screenshot for our reference.
I am probably missing it out from my eyes.
Delete all pages but the, one you linked, delete all breakpoints except the misbehaving ones.
Share this reduced .muse file with us, using Dropbox, CC Files or a similar service. You may follow these recommendations: https://forums.adobe.com/docs/DOC-8652
This is quite easy to fix:
When you reduce your page width, the images are scaling down proportionally and this results in a gap at the bottom of the page.
You can fix this, by choosing menu „Page/Page Properties“ and reduce your minimal(!) page height considerably. Set it, for example, to 500 px. Page height is dynamic. It will alway have a height, which allows all elements to stay within the page area.
Do this for every breakpoint and you will have successfully killed the gap!
Yes Yes Yes !!!
It works ! Günter you are awesome as always. Thanks a lot
But one more thing (© Steve Jobs): Is there a good reason why you have placed these images onto the master page?
Ah! In this case: Very fine and time saving idea!
Fine, thx one more time