You can basically tweak the header section with styles as per your need. You can do that in a few clicks through WordPress Customizer.

Options for Header section are placed inside WordPress customizer which are sticky header, Header layout, Header style, Changing logo. 

Sticky Header: Make logo & navigation portion sticky when scrolling Custom logo: 

Make sure the height of the logo is 250px. Your width of logo could be anything like 200px, 300px, 250px or something like that. 

Header top & header top social icons: You can assign social icons at header top from when you choose different header layout.

HEADER TOP SECTION

Raise Mag Header top section can be customized from the customizer. Navigate to WordPress Dashboard > Appearance > Customizer > Header Section. Select different header layout from the option. Header layout 1, 2 and 3 has Top header whereas Header layout 4 has no top header(only Primary Menu).

For social links, options are inside Customizer > Social Links. 

HEADER SECTION PRIMARY NAVIGATION & LOGO Logo can be changed from the Site identity option inside WordPress customizer. If you are adding a custom logo make sure the height of your logo is 250px. Primary Navigation can be added from the WordPress dashboard > Appearance > Menu.

Header Layout Raise Mag Pro has 4 types of Header layouts options where as  Free has 2 Header layouts. You can also select the header style to Light or Dark.