Hi Alaa, the Atlas UI supports horizontal wizard steps. You can check out the wizard templates here, or you can download the Atlas UI Reference App to see how it's made.
I believe the wizard is a layout grid right? You can put classes on the columns to prevent it from 'breaking': just put the classes 'col-sm-4' and 'col-xs-4' on your layout grid colums (assuming the weight you want to give is 4)
I think that should work!
I have fixed it like this for mobile devices:
With a bunch of css.... If this is what you are looking for, i can share the css