Building My First Web App: A Feature-Packed Offline PWA Calculator

Hi everyone! 👋 I just published v1.0.0 of my very first web project: an installable Progressive Web App (PWA) built from scratch using HTML, CSS, and Vanilla JavaScript. I designed it to be extra accessible and versatile, especially for older adults, shopkeepers, students, and everyday users. ✨ Key Features Multiple Modes: Standard, Scientific, Sales, Interest (Simple & Compound), Unit Conversions, BMI, Age, and Adjustable Percentage. Customization: Adjustable button sizes and custom background themes (including Dark and Light modes). Offline PWA Support: Service worker caching allows full offline functionality and direct installation on mobile or desktop devices. 🔗 Try It Out & Explore Code 🚀 Live Demo: mdalif027-tech.github.io/easy-calculator 💻 GitHub Repository: github.com/mdalif027-tech/easy-calculator 💬 Looking for Feedback Since this is my first app, I would really appreciate any thoughts on: Mobile touch layout and responsiveness across screen sizes. UI/UX design or theme improvements. Recommendations for features to add in future releases. Thank you so much for checking it out!