Display change Question

So I am having a whole whack of issues which I know it’s because I have no idea what the hell I am doing.

Here are my issue…

I know things change from one display size to another… However, how do I change say… an image size on my mobile portrait without it changing on my desktop? It keeps happening and it’s getting infuriating. I’ve tried styles with combo classes and it does nothing.

Sometimes images are HUGE on the mobile versions because the desktop ones are so big. So I don’t want them that big but the moment I change them on the mobile version then the desktop version changes too… I don’t want that.

This is getting infuriating.

Thank you in advanced.

Here is my site Read-Only: Webflow - Cheeco Nation Ink

Still looking for help…