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<!DOCTYPE html> <html> <head> <style> img { position: absolute; left: 0px; top: 0px; z-index: -1; } </style> </head> <body> <h1>The z-index Property</h1> <img src="w3css.gif" width="100" height="140"> <p>Because the image has a z-index of -1, it will be placed behind the heading.</p> </body> </html>