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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Example of CSS font-family property</title> <style> body { font-family: Arial, Helvetica, sans-serif; } h1 { font-family: "Times New Roman", Times, serif; } </style> </head> <body> <h1>This is a heading</h1> <p>This is a paragraph.</p> </body> </html>