Fix Header Layout and Navigation Links on input page

## Description
1. **Unexpected Navigation:** Clicking on the empty space to the right of the EduAid logo redirects to the homepage, even though it shouldn't.
2. **Misaligned Text:** The "Enter the Content to Generate Questionnaires" text is positioned towards the right instead of being centered, which affects readability.

## Steps to Reproduce
1. Open the input page (`/input`).
2. Click anywhere on the empty space to the right of the EduAid logo → Redirects to the homepage unexpectedly.
3. Observe that the "Enter the Content to Generate Questionnaires" text is not centrally aligned.

## Expected Behavior
- Clicking on empty space should **not trigger navigation**.
- The text should be **centrally aligned** for better readability.

## Possible Fixes
- Check if an **unintended `` tag or `onClick` event** is applied to the whole section.
- Adjust alignment (`text-align: center;` or use `flexbox/grid`) to ensure proper text alignment.

https://github.com/user-attachments/assets/923a2e97-2005-40a3-bfaf-7e1be0c96b59