Both Desktop & Mobile Display Simulraneously

[harryd]

I built a new page by duplicating an old one and replacing the old contents with new stuff. Everything works fine when I test the page using the Preview function and then call up Chrome from the Xara work page. However, when I publish the page and then view the online published version, both the desktop and mobile versions display simultaneously. Here's an example.

https://dividenddetective.com/reit_d...thcaretest.htm

I already have several pages working correctly, but this has happened before and I fixed it by redoing the whole page. Any ideas?

Harry