Keep logo the same size on scroll

Is it possible to keep the logo the same size when the user scrolls down the page and the menu bar becomes sticky at the top (rather than scaling down)? I've tried adding custom CSS to make .site-logo img an explicit height and width, and even added !important to the style rules, but the logo still shrinks.  Any help you can provide to make this happen is appreciated.

I figured out what I needed to do.  For anyone looking to do this in the future, add this to your custom CSS:

#section-header.fixed-transition .site-logo {width: 100% !important; }