Logo in sticky menu resizes because of the padding-top

Dear support,

I’m using the following css in the child-theme style.css file. The css does what it has to do, but when I scroll downwards the logo in the sticky menu gets resized. How can I say that this code only has to be for the normal menu and not sticky menu?

@media only screen 
and (min-width : 768px) {
.logo img { padding-top: 27px !important; }
}

Thanks in advance!