Hertz theme has custom fancy search box. The search box will expand when you click on the search icon and contract when you click in any other part of page.
Follow these simple steps to show fancy search box in header.
- Enable search module from Administrator >> System >> Modules
- Set permission for search module from Administrator >> People >> Permissions
- Navigate to: Administration >> Structure >> Blocks and set location of Search form to Search Box region and click Save blocks button.
admin/structure/block
Search form will now appear in header region.