diff --git a/CODE_OF_CONDUC b/CODE_OF_CONDUC
new file mode 100644
index 000000000..af106812c
--- /dev/null
+++ b/CODE_OF_CONDUC
@@ -0,0 +1,15 @@
+# Code of Conduct
+
+## Introduction
+We are committed to providing an open, safe, and inclusive environment for everyone, regardless of experience level, gender, race, religion, or any other factor.
+
+## Expected Behavior
+- Treat others with respect.  
+- Collaborate in a positive manner.  
+- Avoid verbal abuse or aggressive behavior.  
+
+## Enforcement
+Anyone who violates these rules may receive a warning or be removed from the project.  
+
+## Contact Us
+If you encounter any issues or violati
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 000000000..3dcd46c53
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,47 @@
+# Contributing to This Project
+
+Thank you for considering contributing to this project! Here’s how you can help:
+
+## How to Contribute
+1. **Fork the Repository**  
+   - Click the "Fork" button at the top right of the repository page.
+   - Clone your forked repository using:  
+     ```
+     git clone https://github.com/your-username/repository-name.git
+     ```
+  
+2. **Create a New Branch**  
+   - Run the following command to create a new branch for your contribution:  
+     ```
+     git checkout -b feature-branch-name
+     ```
+
+3. **Make Your Changes**  
+   - Modify the code or documentation as needed.
+   - Add and commit your changes:  
+     ```
+     git add .
+     git commit -m "Description of changes"
+     ```
+
+4. **Push the Changes**  
+   - Push your branch to GitHub:  
+     ```
+     git push origin feature-branch-name
+     ```
+
+5. **Submit a Pull Request**  
+   - Go to your forked repository on GitHub.
+   - Click the **"New Pull Request"** button.
+   - Provide a clear description of your changes.
+   - Submit the request for review.
+
+## Contribution Guidelines
+- Keep your code clean and well-documented.
+- Follow the coding style used in this project.
+- Ensure your changes do not introduce new bugs.
+
+## Reporting Issues
+If you find any bugs or have suggestions, please open an issue in the repository.
+
+Thank you for your contribution!
diff --git a/simple-interest.sh b/simple-interest.sh
new file mode 100644
index 000000000..693979c90
--- /dev/null
+++ b/simple-interest.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# Script to calculate simple interest
+
+# Read Principal amount, Rate of interest, and Time from the user
+echo "Enter Principal Amount:"
+read principal
+echo "Enter Rate of Interest (in % per year):"
+read rate
+echo "Enter Time (in years):"
+read time
+
+# Calculate Simple Interest
+interest=$(echo "scale=2; ($principal * $rate * $time) / 100" | bc)
+
+# Display the result
+echo "The Simple Interest is: $interest"
diff --git a/style.css b/style.css
index b1a4e3b87..2080e288b 100644
--- a/style.css
+++ b/style.css
@@ -1,8 +1,8 @@
 .blue {
-			background-color:blue
+            background-color:blue
 }
 .circle{
-			border-radius:50%;
-			width:300px;
-			height:300px;
-}
+            border-radius:50%;
+            width:500px;
+            height:500px;
+}
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