Thank you for your reply. Perhaps I am missing something? Let me explain more and perhaps you will see where I am going wrong.
In X-Pro page builder, I add a Section, Row, Column and element. I use the settings in the builder to apply margin and padding until I achieve the desired look on my desktop. All is good, so far.
Now, on mobile devices ( and, there are sooo many…) the item needs to be adjusted for each display, so I use CSS Media Queries to make the adjustments. Because the settings in the builder take priority, the only way I seem to be able to override them, to adjust for a specific device, is to use “!important”. Once I use “!important” once, to set for one device, I cannot use it again to adjust for a different device.
What do I need to do to be able to customize for every device independently? There is probably some basic thing I am not understanding here…