Header (logo, top navigation)

Change the size of the logo and the space around it

To change the logo browse to Dashboard > Appearance > Customize > Theme – Customize it > Header.
Managing Menus and Navigation

There are two menu locations: Site Header Menu, located on top of page under your Logo Site Footer Menu, located...
Change the logo

7 easy steps to add your own logo. From your WordPress dashboard: Step 1 – Navigate to Appearance > Customize Step...