I am trying to adjust the phone view of my website, however the picture is not fixed and it is moving as you can see on the video. What should I do to make the picture and the description stack on each other for any viewport size?
Your elements seem to have a lot of position absolute settings in Pixels and it is probably the reason why they are not behaving the way you expect.
You might learn a bit more about your site structure and responsiveness watching this: