Mobile view editor also affects the desktop one

I just started a website with gutenberg + kadence blocks and the kadence theme. Now i finished the home page for the desktop version, i’m trying to edit it for tablets and mobiles. Problem is that everything i do in these modes also affects the desktop version! For example, if i resize an image to make it smaller, then this image is also resized in the desktop view instead of keeping its own desktop size.

I think it’s not a big problem but i can’t find anything or any spot where i could set this the right way. If someone can help me, it would be nice. Thanks in advance!