Update README.md

Author: SuRu190

README.md

@@ -47,3 +47,13 @@ This repository helps in understanding:
 - Styling and interaction using JavaScript
 
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+
+## 📱 Responsiveness
+
+All tasks in this repository are fully responsive.  
+They adapt seamlessly to various screen sizes, ensuring usability on:
+- Mobile devices (small screens)
+- Tablets
+- Desktops  
+
+Custom `@media` queries are implemented where necessary to improve the user experience on very small devices.