Hi @knluu
If you mean the white box in the “Full Width Post Slider” slider template:
then the reason that appears in different vertical positions is because the the Vertical Align on the Content Layer is set to Center:
If you want the top of all white boxes to start at the same position, then you should set it to rather Top or Bottom, depending on where you want it to appear.
Or as an alternative solution, you could enable the “Stretch” option on the Row:
and that way the Row ( the white container ) would fill the available vertical space in the slider. By repeating this on all slides, you could make all white boxes to have the same height.
Note: as I mentioned above this will make the Row fill all the available vertical space in the slide. So if you want to create some distance from the top and bottom of the slide, you probably want to apply some top and bottom paddings on the Slide ( to make it look consistent, you should use the same padding on all slides of the slider ).