Thanks Andrew, really appreciate receiving a response.
Can I confirm – this will leave my desktop-view as 3-columns, but adjust the mobile-view to a 1-column setup?
From what I can see on an iPhone 5 this is working perfectly, but on the larger-screened iPhone 6 Plus it is still showing two columns. Are you able to advise what the max. width would have to be to ensure it shows as a single-column on the iPhone 6 Plus?
Thanks so much!
Kester