Theme that looks like a mobile phone

Hello,

I would like to build a website that looks like a mobile phone (without actually develping an app).

Is something like this available? Tried searching but was not successful.

I know this brings up the question about what look I would give it: iOS or Android? With a clever Theme the site could actually switch depending on visitor?

Almost all visitors we have today use mobile phones (tourists that look for information about the location they are visiting) so I would accept that a desktop viewer will have to deal with a mobile phone view.

Today the page is static HTML and I built it so it is extremly simplified: https://www.kohmaknews.com/

Thanks for your help and hello from Koh Mak

The page I need help with: [log in to see the link]