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<!DOCTYPE html> <html> <head> <style> body { background-color:#E7E9EB; } #myDIV { width:100%; height:300px; background-color:#FFFFFF; border-top:4px dashed blue; } </style> </head> <body> <h1>The border-top Property</h1> <div id="myDIV"> A demonstration on how to add a top border. </div> </body> </html>