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<!DOCTYPE html> <html> <head> <style>body{font-family:Arial,sans-serif;padding:20px;background:linear-gradient(135deg,#667eea 0,#764ba2 100%);color:white;min-height:100vh;display:flex;align-items:center;justify-content:center}.card{background:rgba(255,255,255,0.1);padding:40px;border-radius:20px;backdrop-filter:blur(10px);text-align:center}h1{margin-bottom:10px}p{opacity:.9}</style> </head> <body> <div class="card"> <h1>Hello World! 🚀</h1> <p>Edit the code on the left to see changes!</p> </div> </body> </html>
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