Travelify theme mobile optimisation problem

Hi all;

My website https://www.cantravelwilltravel.com was showing fine on mobile devices but since Friday it is no longer showing correctly. In fact it has no images, layout or the correct colour. It appears fine on laptops/ desktops etc.

The only thing I’ve changed is some of the css just to amend the layout of the home page apart from that I haven’t touched anything else.

Does anyone have any ideas what may have caused the problem and how I can resolve it. I do have jetpack installed could this have anything to do with it?

Thanks Tanya