Hi there!
I believe you’re referring to header’s global design, correct? If so, you can customize/design the header using the Header builder. Kindly go to Appearance > Customize > Header. From the Header section, you can see 2 tabs.
1. General– allows you to configure the header and header items general settings
2. Design– this tab allows you to design the header and header items.
To know more about customizing your header, please refer to our quick guide, here: https://www.kadencewp.com/kadence-theme/knowledge-base/header/how-to-customize-the-kadence-header/
But, if you’re not referring to header’s global design, can you please let us know more what do you want to achieve on your site so we can walk you through?
Cheers,
Dane