Description:

As an instructor, I want to navigate between different sections of the Instructor Dashboard using a clear and consistent tab bar so that I can move quickly between course management features without confusion.

Acceptance Criteria:

1. A horizontal navigation bar is implemented directly below the header.
2. The tab bar contains the following sections:
   • Course Info
   • Enrollments
   • Course Team
   • Grading
   • Date Extensions
   • Data Downloads
   • Open Responses
   • Certificates
   • Cohorts
   • Special Exams
3. The active tab is visually highlighted and updates dynamically based on the current page.
4. Clicking a tab navigates to the correct page without a full page reload
5. Tab layout and order follow the design specification.
6. Responsive behavior is implemented for smaller screens with a dropdown in the limit of the screen to show the rest of the options in the navigation tab bar.

Design: Figma