Go to Appearance >> Customize >> Header Settings >> Main Menu Section.
Enable/disable switch option for sticky menu under Menu Sticky option.
Enable/disable switch option to display a simple home icon at primary menu section under Home Icon Option.
Set up typography for primary menu section from Menu Typography where options are ( Font-family, font-weight/style, text-transform, text-decoration, font-size, line height, font color ).
Also, you can set the menu background color and menu hover color.
Click on the Save and Publish button to implement the changes you made.