Common mistakes

Padding/margin is used for positioning

You shouldn't use big padding and margin values, because these are fix values, which can create bad responsive layouts. So you shouldn't use them for positioning, as alignments from parents should be used for that.

Height of a different slide affects the current one

Our slider has a rule, that a slide's height is at least as big as the height of your layers, margins and paddings are and your entire slider is as big as the highest slide is. 

If you don't see any issues on the current slide, unpublish your other slides one-by-one and refresh the slide editor page, to figure out which one creates the issue.

Once you found the problematic slide, make it have less content. If the problem only happens on mobile or tablet device, check out the responsive video to see your options.