With the 3.6 update, you can now build Responsive Layouts directly in InDesign and export with in5.
Alternatively, you can display a different layout in your WordPress post, depending on the device.
Here are the basic steps.
- With in5, you can choose from Alternate Layouts (created in InDesign) in the Range field and export them as separate HTML documents.
- Upload each of the documents and place them in your post using the in5 Embed Plugin for WordPress.
- Use a shortcode plugin, like this one, to show different layout(s) on mobile devices.