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<h1>Hello Dost!</h1> <p>Yeh aapki app hai. Left mein code likho, "Run" dabao.</p> <button id="btn">Click Karo</button> body{ font-family: sans-serif; padding: 30px; color: #222; } button{ padding: 10px 18px; border-radius: 8px; border: none; background: #5eead4; cursor: pointer; font-weight: 700; } document.getElementById('btn').addEventListener('click', () => { alert('Aapki app kaam kar rahi hai! 🎉'); });

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