I'm trying to put a logo on a desktop, which comes out perfect, but when I open it up to see how it looks on my phone it looks awful, it's too big and is out of the screen. So what I need is a code that provides me the ability to have different codes on mobile and desktop, for the logo. To put it simpler I need a code that is only shown on mobile and doesn't appear on desktop, while still having the properties of the logo on the desktop, and I can alter the properties on mobile.
I really appreciate any help you can provide.