Hi!
Thank you for the proper details!
I just checked, but it appears to me the same size as configured on the back-end (60px height, 100% width): http://i.imgur.com/kN5M7mJ.jpg
After making changes and re-freshing your front-end I recommend clearing all caches, in case you have any. Refreshing by pressing CTRL + SHIFT + R is usually enough, but if you have server side cache, then you might have to clear that as well.