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body { font-family: sans-serif; display: flex; justify-content: center; align-items: center; height: 100vh; margin: 0; background: #f0f2f5; } .card { background: white; padding: 2rem; border-radius: 8px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); text-align: center; } h1 { color: #333; } button { padding: 10px 20px; background: #007bff; color: white; border: none; border-radius: 4px; cursor: pointer; } button:hover { background: #0056b3; }
console.log("System Ready."); document.getElementById('btn').addEventListener('click', () => { console.log("Button clicked!"); alert("It works!"); });
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