How to modify header height of Navigation Menu alongside Logo (in Blog pages)

If you want to amend the blog header height of Navigation Menu alongside Logo, please kindly go to OptimizePress >> Blog Settings >> Modules >> Other Scripts >> Custom CSS (drop-down) and then add the below code to the box:

.banner .op-logo {padding: 5px 0;}

body #nav-side.navigation #navigation-alongside {margin: 10px 0 0;}

The first code is to reduce the padding around your OP2 logo while the second code is to reduce the margin of navigation menu. If you want to make increase or decrease it more, please kindly just change 5px and 10px.