I am not sure what I am doing wrong. I added the logo to a module position and it shrinks when I reduce the page but when I get down to iphone size it gets bigger. Not sure why, any ideas?
It's constrained (most likely) to the Gantry cell that it's in... you can control the width of any Gantry position in the Template Manager > Layouts tab...
When you drop below 768px wide in your browser this is considered "mobile view" and ALL Gantry positions/cells get a width of 100% which allows them to stack on top of each other... so sometimes some custom css to keep your logo small... or swap it to a different image file... can be a good idea in "mobile view"
SEARCH the forum first! These boards are rich in knowledge and vast in topics. This includes searching just the 'Solved' forums, using Google, and using ChatGPT