In Theme Options, there are 4 sections to configure the header: Header, Header Style, Header Modules, Header Menu Settings.
+) Section Header: you can manage header modules and determined the way to shown them in your page header
+) Section Header Style: configure your page header style (when its state is static or sticky).
+) Section Header Modules: configure details of header modules.
+) Header Menu Settings: configure style for menu item, sub menu, mega menu.