Ambrosia - Customize Header Section
From your Shopify admin, go to Online Store > Themes > Customize
Click Sections.
Under the Header section you will notice the Announcement bar and the Header.
If you would like to add an additional announcement simply click Add Announcement. If you would like your announcements to auto-rotate select the checkbox for it and the seconds duration in the sidebar.
Upload your logo image in Theme Settings under Logo. You can also upload your favicon design from here. We suggest your logo image be no more than 450px wide. Adjust the logo width to your liking (we've included a Canva template to also help with this).
To choose which menu to show in the header, in the Menu area, click Change. Choose an existing menu, or create a new one by clicking Create menu. If you don't want to show a menu in your header, then click Remove Menu.