> For the complete documentation index, see [llms.txt](https://help.fluorescent.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.fluorescent.co/cornerstone/header.md).

# Header

- [Announcement bar](https://help.fluorescent.co/cornerstone/header/announcement-bar.md): Learn how to set up the announcement bar to display special promotions, an information popup, country and language selector, and social media icon links.
- [Header](https://help.fluorescent.co/cornerstone/header/header.md): Learn how to set up the Header in the Cornerstone theme for Shopify, with custom layouts, logos, transparent headers, and mega navigation menus. Watch the video for navigation menus for large catalogs
- [Logo](https://help.fluorescent.co/cornerstone/header/header/logo.md)
- [Layout and style](https://help.fluorescent.co/cornerstone/header/header/layout.md)
- [Mega navigation](https://help.fluorescent.co/cornerstone/header/header/mega-navigation.md)
- [Transparent header](https://help.fluorescent.co/cornerstone/header/header/transparent-header.md)
- [Mobile menu](https://help.fluorescent.co/cornerstone/header/mobile-menu.md): Learn how to customize the mobile menu drawer in the Cornerstone theme for Shopify. Set up a mobile logo, navigation menus, featured links, and featured blocks for promoted collections and products.
- [Search bar](https://help.fluorescent.co/cornerstone/header/search-bar.md)