Problem with width resolution on mobile

ey guys, when I rotate my phone 90 degrees, the store kind of bugs out and behaves as if it’s on a weird resolution.

It looks like this:

How can I make it so that when I rotate the phone, the store stays in the same layout as it is on mobile? I just want the text to stretch to fit the width, but everything else to remain the same.

This is how I want it to look:

Here’s my store: https://1049xn-ya.myshopify.com/

And here’s a store where it works the way I want: https://tomnoske.store/

Thanks a lot,
Tim