<html><head><style>p.serif{font-family:"Times New Roman",Times,serif;}p.sansserif{font-family:Arial,Helvetica,sans-serif;}</style></head><body><h1>CSS font-family</h1><p class="serif">This is a paragraph, shown in the Times New Roman font.</p><p class="sansserif">This is a paragraph, shown in the Arial font.</p></body></html>