Hello,
These are “Responsive Options” http://prntscr.com/oo43go https://wpbakery.com/video-academy/control-elements-different-devices-responsive-column-controls/
Also, I would recommend you not use large values in px or change them to vw https://www.w3schools.com/cssref/css_units.asp
You can create a block that will be visible on desktop or mobile only – http://prntscr.com/oo453m
Regards