How can I shrink header size ?

There is a lot of white space between the logo and navigation pages and the banner image. Is there a way to minimize that? 

Hi Rio, That depends entirely on which theme you're using on your site. Some WordPress themes include fine-grained control over the layout and design of your site, usually via the Customizer. If your theme does not, you can still modify the CSS for your site in: Appearance > Customize > Additional CSS You can right-click on any element on your site to launch the Inspector or Developer Tools in your web browser and view the underlying code for that element. Once you know the name of the object, you can write custom CSS that will override the styles set by your theme. If you don't want to mess with the underlying code of your theme, you can always chat with a WordPress expert right here on our site who can knock it out for you! Hope this helps.