Day 19 – Calendar App Completed! 📅 Aaj maine pure HTML, CSS aur JavaScript se ek smart Calendar App bana diya! Features: • Current month + year auto display • Previous/Next month navigation ➡️⬅️ • Aaj ki date automatically highlight ho jati hai 🔴 • Clean aur modern design (mobile pe bhi perfect) • Leap year bhi handle karta hai! Coding with ChatGPT – Day 19 🧑‍💻 📅 Calendar App Flip & Match Feature #100DaysOfCode #JavaScript #FrontendDevelopment #WebDev