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<!DOCTYPE html> <html> <head> <style> .ex1 { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 50%; border: 2px solid #00ab55; padding: 10px; } </style> </head> <body> <div class="ex1"> <h2>position: absolute</h2> <p>Hello World!</p> </div> </body> </html>
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