Here you can style your header and your navigation.
To open the customizer go to Appearance > Customize.
Change the behavior of the header to stick to the top of the page or keep it as normal.
Change the style of the header to simple, separator or shadow.
Change the appearance of the header to dark or light color scheme. Don’t forget to change the background color as well.
Change the header background color. It’s possible to change the opacity of it as well.
Show or hide the header menu. It disappears automatically on responsive view.
Show or hide the search icon.
Show or hide the responsive navigation icon on different screen sizes.
Transparent Header Underline:
Show or hide the transparent header underline. You can select the transparent header option on each page or post.
Show or hide the entire header area.