Depending on your interaction you may sometimes need to create separate versions for different devices. This article tells you how that can be done.
To save some time and effort, we encourage you to create one version of your interaction first, for either type of device and then copy it once it's finished and tested. You can then make the required adjustments to the copied version so that it fits the other type of device.
When designing and previewing an interaction, notice on the bottom left side of the tool there are some icons indicating the device type. Selecting them will resize the canvas of the Interaction Builder tool to reflect the sizes of different devices.
Once you have designed your interaction and tested it on the preview page, you can move on to publishing. On the publishing page, you can then select the type of device the interaction should trigger on. 