Create README for DIU Student Manager Dashboard

Added README.md for the DIU Student Manager Dashboard project, detailing features, project structure, tech stack, and getting started instructions.

Author: Mdsifatmahmud

README.md

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+
+# 🎓 DIU Student Manager Dashboard
+
+<p align="center">
+A modern academic productivity dashboard built for students of <b>Daffodil International University</b>.
+<br>
+Manage classes, assignments, study plans, habits, goals, and daily routines in one place.
+</p>
+
+<p align="center">
+
+![HTML](https://github.com/Mdsifatmahmud/DIU_Student_manager/blob/main/index.html)
+
+
+</p>
+
+---
+
+## 📖 About The Project
+
+**DIU Student Manager Dashboard** is a student productivity tool designed to help university students organize their academic activities efficiently.
+
+The dashboard provides a centralized place to manage:
+
+* class schedules
+* assignments and deadlines
+* study plans
+* personal goals
+* daily habits
+* structured routines
+
+This project demonstrates practical **frontend dashboard development** and user-focused design for academic productivity.
+
+---
+
+## ✨ Features
+
+✔ Class Schedule Manager
+✔ Assignment & Deadline Tracker
+✔ Study Planner
+✔ Goal Management
+✔ Habit Tracking
+✔ Daily Routine Planner
+✔ Multi-page Dashboard Navigation
+
+---
+
+## 🖼 Project Preview
+
+
+Example:
+
+```
+/assets/screenshots/dashboard.png
+```
+
+```markdown
+![Dashboard Preview](assets/screenshots/dashboard.png)
+```
+
+---
+
+## 🧱 Project Structure
+
+```
+diu-student-manager
+│
+├── index.html
+├── schedule.html
+├── assignments.html
+├── planner.html
+├── habits.html
+├── goals.html
+│
+├── css
+│   └── styles.css
+│
+├── js
+│   └── script.js
+│
+└── assets
+    ├── screenshots
+    └── images
+```
+
+---
+
+## 🛠 Tech Stack
+
+| Technology | Purpose       |
+| ---------- | ------------- |
+| HTML5      | Structure     |
+| CSS3       | Styling       |
+| JavaScript | Interactivity |
+
+---
+
+## 🚀 Getting Started
+
+### Clone the repository
+
+```bash
+git clone https://github.com/yourusername/diu-student-manager.git
+```
+
+### Open the project
+
+Simply open:
+
+```
+[index.html](https://github.com/Mdsifatmahmud/DIU_Student_manager/blob/main/index.html)
+```
+
+
+
+---
+
+## 🎯 Future Improvements
+
+* User authentication system
+* Database integration
+* Mobile responsive design
+* Study analytics dashboard
+* Reminder & notification system
+* Calendar integration
+
+---
+
+## 👨‍💻 Author
+
+**Md. Sifat Mahmud**
+CSE Student
+Daffodil International University
+
+GitHub:
+[https://github.com/yourusername](https://github.com/Mdsifatmahmud)
+
+---
+
+## ⭐ Support
+
+If you find this project helpful, consider giving it a **star ⭐** on GitHub.
+
+