I am currently using the Supply theme - my shop (in French) can be found at the following address: https://assiettes-anciennes.fr/
I have just added my logo and I am happy with the way thing look on desktop, but on mobile the header is too big.
I would like to reduce the top and bottom margin (or padding?) to reduce the size of the header, on the mobile version only (see printscreens below)
I have checked the CSS code but haven’t found where to change this - but I’m not very good with code…